MOS Spectroscopy of Extragalactic Field#
Use case: emission-line measurements and template matching on 1D spectra.
Data: LEGA-C spectra and galaxy template spectra; optical rest-frame.
Tools: specutils, astropy, matplotlib, pandas.
Cross-intrument: NIRSpec
Documentation: This notebook is part of a STScI’s larger post-pipeline Data Analysis Tools Ecosystem.
Introduction#
This notebook will perform a seris of spectroscopic analyses on multiple spectra, including smoothing, continuum fitting and subtraction, line identification, centroiding and flux measurements, gaussian fitting, equivalent widths, and template fitting.
Note: This notebook is intended to ultimately be compatible with the final data products (1D and 2D spectra) from the JWST pipeline. These data products are not available yet, so the notebook uses LEGA-C data (van der Wel et al. 2016, Straatmann et al. 2018) for now.
LEGA-C is a galaxy survey of about 3000 galaxies at z~0.8 and M* > 10^10 M_sun in the COSMOS field. The spectra sample the rest-frame optical between ~3000A and 5000A at high resolution and very high signal-to-noise ratio. More information about the survey can be found here: http://www.mpia.de/home/legac/
First, set the environment with astroconda and specutils.
conda create -n astroutils stsci
source activate astroutils
Imports#
#general os
import os
import zipfile
import urllib.request
#general plotting
from matplotlib import pyplot as plt
params={'legend.fontsize':'18','axes.labelsize':'18',
'axes.titlesize':'18','xtick.labelsize':'18',
'ytick.labelsize':'18','lines.linewidth':2,'axes.linewidth':2,'animation.html': 'html5'}
plt.rcParams.update(params)
plt.rcParams.update({'figure.max_open_warning': 0})
#table/math handling
import pandas as pd
import numpy as np
np.seterr(all='ignore') # hides irrelevant warnings about divide-by-zero, etc
#astropy
import astropy
import astropy.units as u
from astropy.table import QTable
from astropy.io import fits,ascii
from astropy.nddata import StdDevUncertainty
from astropy.modeling import models
from astropy.visualization import quantity_support
from astropy import constants as const
#specutils
import specutils
from specutils import Spectrum1D, SpectralRegion
from specutils.manipulation import gaussian_smooth
from specutils.fitting import fit_generic_continuum
from specutils.fitting import find_lines_derivative
from specutils.fitting import find_lines_threshold
from specutils.fitting import fit_lines
from specutils.manipulation import noise_region_uncertainty
from specutils.analysis import centroid
from specutils.analysis import line_flux
from specutils.analysis import equivalent_width
from specutils.analysis import template_comparison
quantity_support(); # auto-recognizes units on matplotlib plots
Check versions. Should be:#
Pandas: 1.0.1
Numpy: 1.18.1
Astropy: 4.0
Specutils: 0.7
print("Pandas: ",pd.__version__)
print("Numpy: ",np.__version__)
print("Astropy: ",astropy.__version__)
print("Specutils: ",specutils.__version__)
Pandas: 2.1.4
Numpy: 1.26.2
Astropy: 6.0.0
Specutils: 1.12.0
Set path to data and download from box link#
boxlink = 'https://data.science.stsci.edu/redirect/JWST/jwst-data_analysis_tools/mos_spectroscopy/mos_spectroscopy.zip'
boxfile = './mos_spectroscopy.zip'
urllib.request.urlretrieve(boxlink, boxfile)
zf = zipfile.ZipFile(boxfile, 'r')
zf.extractall()
observedfiles = './mos_spectroscopy/observed/'
Choose one galaxy#
file1d = observedfiles + 'legac_M1_v3.7_spec1d_130902.fits'
file1dwht = observedfiles + 'legac_M1_v3.7_wht1d_130902.fits'
file2d = observedfiles + 'legac_M1_v3.7_spec2d_130902.fits'
Inspect its 2D spectrum#
hdu2d = fits.open(file2d)
hdu2d.info()
Filename: ./mos_spectroscopy/observed/legac_M1_v3.7_spec2d_130902.fits
No. Name Ver Type Cards Dimensions Format
0 PRIMARY 1 PrimaryHDU 716 (6166, 81) float32
hdu2d[0].header
SIMPLE = T / file does conform to FITS standard
BITPIX = -32 / number of bits per data pixel
NAXIS = 2 / number of data axes
NAXIS1 = 6166 / length of data axis 1
NAXIS2 = 81 / length of data axis 2
EXTEND = T / FITS dataset may contain extensions
COMMENT FITS (Flexible Image Transport System) format is defined in 'Astronomy
COMMENT and Astrophysics', volume 376, page 359; bibcode: 2001A&A...376..359H
DATE = '2015-01-26T12:24:07' / file creation date (YYYY-MM-DDThh:mm:ss UT)
ORIGIN = 'ESO ' / European Southern Observatory
MJD-OBS = 57040.16930682 / Obs start 2015-01-18T04:03:48.109
DATE-OBS= '2015-01-18T04:03:48.108' / Date of observation
EXPTIME = 1199.997 / Total integration time. 00:19:59.997
TELESCOP= 'ESO-VLT-U3' / ESO <TEL>
RA = 150.220555 / 10:00:52.9 RA (J2000) pointing
DEC = 2.41104 / 02:24:39.7 DEC (J2000) pointing
EQUINOX = 2000. / Standard FK5
RADECSYS= 'FK5 ' / Coordinate reference frame
LST = 25866.379 / 07:11:06.379 LST at start
UTC = 14623. / 04:03:43.000 UT at start
OBSERVER= 'VIMOS ' / Name of observer
INSTRUME= 'VIMOS ' / Instrument used
PI-COI = '555555555' / Name of PI and COI
OBJECT = 'COSMOS_M01' / Original target
CRVAL1 = 5800.3 / 10:00:52.9, RA at ref pixel
CRPIX1 = 1. / Reference pixel in X
CTYPE1 = 'LINEAR ' / pixel coordinate system
CRVAL2 = 1. / 02:24:39.7, DEC at ref pixel
CRPIX2 = 1. / Reference pixel in Y
CTYPE2 = 'PIXEL ' / pixel coordinate system
INHERIT = T / denotes the INHERIT keyword convention
CD1_1 = 0.6 / Translation matrix element
CD1_2 = 0. / Translation matrix element
CD2_1 = 0. / Translation matrix element
CD2_2 = 1. / Translation matrix element
DATAMD5 = '77a1ef86719040e2fea8d1d96fef35e0' / MD5 checksum
PIPEFILE= 'mos_science_sky_extracted.fits' / Filename of data product
ARCFILE = 'VIMOS.2015-01-18T04:03:48.110.fits' / Archive File Name
HIERARCH ESO OBS DID = 'ESO-VLT-DIC.OBS-1.12' / OBS Dictionary
HIERARCH ESO OBS EXECTIME = 6835 / Expected execution time
HIERARCH ESO OBS GRP = '0 ' / linked blocks
HIERARCH ESO OBS ID = 1163772 / Observation block ID
HIERARCH ESO OBS NAME = 'legac_M01_2' / OB name
HIERARCH ESO OBS OBSERVER = 'UNKNOWN ' / Observer Name
HIERARCH ESO OBS PI-COI ID = 73498 / ESO internal PI-COI ID
HIERARCH ESO OBS PI-COI NAME = 'UNKNOWN ' / PI-COI name
HIERARCH ESO OBS PROG ID = '194.A-2005(B)' / ESO program identification
HIERARCH ESO OBS START = '2015-01-18T03:38:14' / OB start time
HIERARCH ESO OBS NTPL = 3 / Number of templates within OB
HIERARCH ESO OBS TPLNO = 2 / Template number within OB
HIERARCH ESO OBS AIRM = 2. / Req. max. airmass
HIERARCH ESO OBS AMBI FWHM = 1.3 / Req. max. seeing
HIERARCH ESO OBS AMBI TRANS = '2CLR ' / Req. sky transparency
HIERARCH ESO OBS ATM = 'NATM ' / Req. Atmospheric Turbulence Model
HIERARCH ESO OBS CONTAINER ID = -999 / Scheduling container ID
HIERARCH ESO OBS CONTAINER TYPE = 'U ' / Scheduling container type
HIERARCH ESO OBS MOON DIST = 120 / Req. min. angular dist. from moon
HIERARCH ESO OBS MOON FLI = 0.3 / Req. max. fractional lunar illum.
HIERARCH ESO OBS STREHLRATIO = 0. / Req. strehl ratio
HIERARCH ESO OBS TARG NAME = 'COSMOS_M01' / OB target name
HIERARCH ESO OBS TWILIGHT = -15 / Req. twilight
HIERARCH ESO OBS WATERVAPOUR = 0. / Req. water vapour
HIERARCH ESO TPL FILE DIRNAME = '$INS_ROOT/$INS_USER/ADF' / Storage filename
HIERARCH ESO TPL FILE KEEP = T / paramfile keep-flag
HIERARCH ESO TPL DID = 'ESO-VLT-DIC.TPL-1.9' / Data dictionary for TPL
HIERARCH ESO TPL ID = 'VIMOS_mos_obs_Offset' / Template signature ID
HIERARCH ESO TPL NAME = 'MOS Observation' / Template name
HIERARCH ESO TPL PRESEQ = 'VIMOS_mos_obs_Offset' / Sequencer script
HIERARCH ESO TPL START = '2015-01-18T04:01:12' / TPL start time
HIERARCH ESO TPL VERSION = '@(#) $Revision: 77996 $' / Version of the templa
HIERARCH ESO TPL NEXP = 4 / Number of exposures within templat
HIERARCH ESO TPL EXPNO = 1 / Exposure number within template
HIERARCH ESO TEL DID = 'ESO-VLT-DIC.TCS' / Data dictionary for TEL
HIERARCH ESO TEL ID = 'v 261159' / TCS version number
HIERARCH ESO TEL DATE = '2000-01-01T00:00:00' / TCS installation date
HIERARCH ESO TEL ALT = 40.643 / Alt angle at start
HIERARCH ESO TEL AZ = 243.107 / Az angle at start S=0,W=90
HIERARCH ESO TEL GEOELEV = 2648. / Elevation above sea level (m)
HIERARCH ESO TEL GEOLAT = -24.6268 / Tel geo latitute (+=North)
HIERARCH ESO TEL GEOLON = -70.4045 / Tel geo longitude (+=East)
HIERARCH ESO TEL OPER = 'I, Condor' / Telescope Operator
HIERARCH ESO TEL FOCU ID = 'NB ' / Telescope focus station ID
HIERARCH ESO TEL FOCU LEN = 120. / Focal length
HIERARCH ESO TEL FOCU SCALE = 1.718 / Focal scale
HIERARCH ESO TEL FOCU VALUE = -31.348 / M2 setting
HIERARCH ESO TEL PARANG START = -125.768 / Parallactic angle at start
HIERARCH ESO TEL AIRM START = 1.533 / Airmass at start
HIERARCH ESO TEL AMBI FWHM START = 1.08 / Observatory Seeing queried from AS
HIERARCH ESO TEL AMBI PRES START = 744.4 / Observatory ambient air pressure q
HIERARCH ESO TEL AMBI WINDSP = 0.82 / Observatory ambient wind speed que
HIERARCH ESO TEL AMBI WINDDIR = 325.5 / Observatory ambient wind direction
HIERARCH ESO TEL AMBI RHUM = 3. / Observatory ambient relative humid
HIERARCH ESO TEL AMBI TEMP = 15.77 / Observatory ambient temperature qu
HIERARCH ESO TEL MOON RA = 265.331996 / 17:41:19.6 RA (J2000)
HIERARCH ESO TEL MOON DEC = -17.93387 / -17:56:01.9 DEC (J2000)
HIERARCH ESO TEL TH M1 TEMP = 13.63 / M1 superficial temperature
HIERARCH ESO TEL TRAK STATUS = 'NORMAL ' / Tracking status
HIERARCH ESO TEL DOME STATUS = 'FULLY-OPEN' / Dome status
HIERARCH ESO TEL CHOP ST = F / True when chopping is active
HIERARCH ESO TEL TARG ALPHA = 100052.8 / Alpha coordinate for the target
HIERARCH ESO TEL TARG DELTA = 22436. / Delta coordinate for the target
HIERARCH ESO TEL TARG EPOCH = 2000. / Epoch
HIERARCH ESO TEL TARG EPOCHSYSTEM = 'J ' / Epoch system (default J=Julian)
HIERARCH ESO TEL TARG EQUINOX = 2000. / Equinox
HIERARCH ESO TEL TARG PMA = 0. / Proper Motion Alpha
HIERARCH ESO TEL TARG PMD = 0. / Proper motion Delta
HIERARCH ESO TEL TARG RADVEL = 0. / Radial velocity
HIERARCH ESO TEL TARG PARALLAX = 0. / Parallax
HIERARCH ESO TEL TARG COORDTYPE = 'M ' / Coordinate type (M=mean A=apparen
HIERARCH ESO TEL PARANG END = -128.789 / Parallactic angle at end
HIERARCH ESO TEL AIRM END = 1.421 / Airmass at end
HIERARCH ESO TEL AMBI FWHM END = 1.03 / Observatory Seeing queried from AS
HIERARCH ESO TEL IA FWHM = 1. / Delivered seeing corrected by airm
HIERARCH ESO TEL IA FWHMLIN = 1.01 / Delivered seeing on IA detector (l
HIERARCH ESO TEL IA FWHMLINOBS = 1.25 / Delivered seeing on IA detector (l
HIERARCH ESO TEL AMBI PRES END = 744.3 / Observatory ambient air pressure q
HIERARCH ESO TEL AMBI TAU0 = 0.0039 / Average coherence time
HIERARCH ESO TEL GS1 ALPHA = 100057.969 / Guide Star alpha
HIERARCH ESO TEL GS1 DELTA = 23539.05 / Guide Star delta
HIERARCH ESO TEL GS1 PPOS = 'NEG ' / Selected probe position (POS or NE
HIERARCH ESO TEL TARG NAME = ' ' / Name of special target position
HIERARCH ESO INS SWSIM = 'NORMAL ' / Software simulation
HIERARCH ESO INS ID = 'VIMOS ' / Instrument identification
HIERARCH ESO INS DID = 'ESO-VLT-DIC.VIMOS_ICS-242857' / Data dictionary
HIERARCH ESO INS SOFT DATE = 'Mar 20 2014' / Instrument SW Release date
HIERARCH ESO INS SOFT ID = '186976 ' / Version of ICS
HIERARCH ESO INS FOCU1 TEMP = 14.61792 / Temperature(C) for the beam
HIERARCH ESO INS ADF TYPE = 'MOS ' / Type of ADF
HIERARCH ESO INS ADF VERSION = 3.28 / Version of ADF
HIERARCH ESO INS ADF UNIT = 'MILLIMETER' / Unit of slit/object coordinates
HIERARCH ESO INS ADF ID = 'legac_M1Q1_HR_Red_M1Q1.adp' / Name for the ADF
HIERARCH ESO INS ADF ADMID = '2015-01-18T03:38:06-101-1.adm' / Name for the *.
HIERARCH ESO INS ADF COMMENT = ' ' / Optional user comment for ADF
HIERARCH ESO INS MASK1 ID = 103063 / Mask identification number
HIERARCH ESO INS ADF GRISM NAME = 'HR_Red ' / Grism name
HIERARCH ESO INS ADF GRISM SPECTLEN = 4096. / Spectrum length in pixels
HIERARCH ESO INS ADF SKYREG = 1.8 / Sky region in arcsec
HIERARCH ESO INS REF NO = 1 / Number of reference apertures
HIERARCH ESO INS ARC NO = 0 / Number of curved apertures
HIERARCH ESO INS SLIT NO = 33 / Number of all apertures but refere
HIERARCH ESO INS SHU NO = 1 / Number of shutter positions
HIERARCH ESO INS SHU1 POSL = 0. / Lower shutter positions
HIERARCH ESO INS SHU1 POSH = 2440. / Upper shutter positions
HIERARCH ESO INS REF1 TYPE = 'SQUARE ' / Type of REF i
HIERARCH ESO INS REF1 ID = 132308 / ID of REF i
HIERARCH ESO INS REF1 OBJ RA = 150.345742 / RA (J2000) of object
HIERARCH ESO INS REF1 OBJ DEC = 2.347825 / DEC (J2000) of object
HIERARCH ESO INS REF1 X = -27.353 / x co-ordinate of REF i
HIERARCH ESO INS REF1 Y = 105.937 / y co-ordinate of REF i
HIERARCH ESO INS REF1 DIMX = 3.576 / Size in x direction of REF i
HIERARCH ESO INS REF1 DIMY = 3.579 / Size in y direction of REF i
HIERARCH ESO INS SLIT1 TYPE = 'RECTANGLE' / Type of SLIT i
HIERARCH ESO INS SLIT1 ID = 135357 / ID of SLIT i
HIERARCH ESO INS SLIT1 OBJ RA = 150.295375 / RA (J2000) of object
HIERARCH ESO INS SLIT1 OBJ DEC = 2.387456 / DEC (J2000) of object
HIERARCH ESO INS SLIT1 X = -114.091 / x co-ordinate of SLIT i
HIERARCH ESO INS SLIT1 Y = 0.598 / y co-ordinate of SLIT i
HIERARCH ESO INS SLIT1 DIMX = 11.926 / Size in x direction of SLIT i
HIERARCH ESO INS SLIT1 DIMY = 0.582 / Size in y direction of SLIT i
HIERARCH ESO INS SLIT2 TYPE = 'RECTANGLE' / Type of SLIT i
HIERARCH ESO INS SLIT2 ID = 135418 / ID of SLIT i
HIERARCH ESO INS SLIT2 OBJ RA = 150.294267 / RA (J2000) of object
HIERARCH ESO INS SLIT2 OBJ DEC = 2.384864 / DEC (J2000) of object
HIERARCH ESO INS SLIT2 X = -105.266 / x co-ordinate of SLIT i
HIERARCH ESO INS SLIT2 Y = -1.718 / y co-ordinate of SLIT i
HIERARCH ESO INS SLIT2 DIMX = 5.247 / Size in x direction of SLIT i
HIERARCH ESO INS SLIT2 DIMY = 0.582 / Size in y direction of SLIT i
HIERARCH ESO INS SLIT3 TYPE = 'RECTANGLE' / Type of SLIT i
HIERARCH ESO INS SLIT3 ID = 134929 / ID of SLIT i
HIERARCH ESO INS SLIT3 OBJ RA = 150.314113 / RA (J2000) of object
HIERARCH ESO INS SLIT3 OBJ DEC = 2.381319 / DEC (J2000) of object
HIERARCH ESO INS SLIT3 X = -98.833 / x co-ordinate of SLIT i
HIERARCH ESO INS SLIT3 Y = 39.782 / y co-ordinate of SLIT i
HIERARCH ESO INS SLIT3 DIMX = 7.155 / Size in x direction of SLIT i
HIERARCH ESO INS SLIT3 DIMY = 0.582 / Size in y direction of SLIT i
HIERARCH ESO INS SLIT4 TYPE = 'RECTANGLE' / Type of SLIT i
HIERARCH ESO INS SLIT4 ID = 134657 / ID of SLIT i
HIERARCH ESO INS SLIT4 OBJ RA = 150.333579 / RA (J2000) of object
HIERARCH ESO INS SLIT4 OBJ DEC = 2.377983 / DEC (J2000) of object
HIERARCH ESO INS SLIT4 X = -91.636 / x co-ordinate of SLIT i
HIERARCH ESO INS SLIT4 Y = 80.503 / y co-ordinate of SLIT i
HIERARCH ESO INS SLIT4 DIMX = 6.799 / Size in x direction of SLIT i
HIERARCH ESO INS SLIT4 DIMY = 0.582 / Size in y direction of SLIT i
HIERARCH ESO INS SLIT5 TYPE = 'RECTANGLE' / Type of SLIT i
HIERARCH ESO INS SLIT5 ID = 134371 / ID of SLIT i
HIERARCH ESO INS SLIT5 OBJ RA = 150.297429 / RA (J2000) of object
HIERARCH ESO INS SLIT5 OBJ DEC = 2.374828 / DEC (J2000) of object
HIERARCH ESO INS SLIT5 X = -84.818 / x co-ordinate of SLIT i
HIERARCH ESO INS SLIT5 Y = 4.892 / y co-ordinate of SLIT i
HIERARCH ESO INS SLIT5 DIMX = 6.318 / Size in x direction of SLIT i
HIERARCH ESO INS SLIT5 DIMY = 0.581 / Size in y direction of SLIT i
HIERARCH ESO INS SLIT6 TYPE = 'RECTANGLE' / Type of SLIT i
HIERARCH ESO INS SLIT6 ID = 134169 / ID of SLIT i
HIERARCH ESO INS SLIT6 OBJ RA = 150.29875 / RA (J2000) of object
HIERARCH ESO INS SLIT6 OBJ DEC = 2.372181 / DEC (J2000) of object
HIERARCH ESO INS SLIT6 X = -78.739 / x co-ordinate of SLIT i
HIERARCH ESO INS SLIT6 Y = 7.657 / y co-ordinate of SLIT i
HIERARCH ESO INS SLIT6 DIMX = 5.364 / Size in x direction of SLIT i
HIERARCH ESO INS SLIT6 DIMY = 0.581 / Size in y direction of SLIT i
HIERARCH ESO INS SLIT7 TYPE = 'RECTANGLE' / Type of SLIT i
HIERARCH ESO INS SLIT7 ID = 133783 / ID of SLIT i
HIERARCH ESO INS SLIT7 OBJ RA = 150.279029 / RA (J2000) of object
HIERARCH ESO INS SLIT7 OBJ DEC = 2.368242 / DEC (J2000) of object
HIERARCH ESO INS SLIT7 X = -71.828 / x co-ordinate of SLIT i
HIERARCH ESO INS SLIT7 Y = -33.576 / y co-ordinate of SLIT i
HIERARCH ESO INS SLIT7 DIMX = 7.987 / Size in x direction of SLIT i
HIERARCH ESO INS SLIT7 DIMY = 0.582 / Size in y direction of SLIT i
HIERARCH ESO INS SLIT8 TYPE = 'RECTANGLE' / Type of SLIT i
HIERARCH ESO INS SLIT8 ID = 133480 / ID of SLIT i
HIERARCH ESO INS SLIT8 OBJ RA = 150.338367 / RA (J2000) of object
HIERARCH ESO INS SLIT8 OBJ DEC = 2.364314 / DEC (J2000) of object
HIERARCH ESO INS SLIT8 X = -63.618 / x co-ordinate of SLIT i
HIERARCH ESO INS SLIT8 Y = 90.513 / y co-ordinate of SLIT i
HIERARCH ESO INS SLIT8 DIMX = 7.988 / Size in x direction of SLIT i
HIERARCH ESO INS SLIT8 DIMY = 0.582 / Size in y direction of SLIT i
HIERARCH ESO INS SLIT9 TYPE = 'RECTANGLE' / Type of SLIT i
HIERARCH ESO INS SLIT9 ID = 133163 / ID of SLIT i
HIERARCH ESO INS SLIT9 OBJ RA = 150.336546 / RA (J2000) of object
HIERARCH ESO INS SLIT9 OBJ DEC = 2.36105 / DEC (J2000) of object
HIERARCH ESO INS SLIT9 X = -56.106 / x co-ordinate of SLIT i
HIERARCH ESO INS SLIT9 Y = 86.692 / y co-ordinate of SLIT i
HIERARCH ESO INS SLIT9 DIMX = 6.557 / Size in x direction of SLIT i
HIERARCH ESO INS SLIT9 DIMY = 0.582 / Size in y direction of SLIT i
HIERARCH ESO INS SLIT10 TYPE = 'RECTANGLE' / Type of SLIT i
HIERARCH ESO INS SLIT10 ID = 133098 / ID of SLIT i
HIERARCH ESO INS SLIT10 OBJ RA = 150.292 / RA (J2000) of object
HIERARCH ESO INS SLIT10 OBJ DEC = 2.358644 / DEC (J2000) of object
HIERARCH ESO INS SLIT10 X = -50.193 / x co-ordinate of SLIT i
HIERARCH ESO INS SLIT10 Y = -6.454 / y co-ordinate of SLIT i
HIERARCH ESO INS SLIT10 DIMX = 4.767 / Size in x direction of SLIT i
HIERARCH ESO INS SLIT10 DIMY = 0.581 / Size in y direction of SLIT i
HIERARCH ESO INS SLIT11 TYPE = 'RECTANGLE' / Type of SLIT i
HIERARCH ESO INS SLIT11 ID = 132633 / ID of SLIT i
HIERARCH ESO INS SLIT11 OBJ RA = 150.276625 / RA (J2000) of object
HIERARCH ESO INS SLIT11 OBJ DEC = 2.355419 / DEC (J2000) of object
HIERARCH ESO INS SLIT11 X = -44.294 / x co-ordinate of SLIT i
HIERARCH ESO INS SLIT11 Y = -38.594 / y co-ordinate of SLIT i
HIERARCH ESO INS SLIT11 DIMX = 6.555 / Size in x direction of SLIT i
HIERARCH ESO INS SLIT11 DIMY = 0.581 / Size in y direction of SLIT i
HIERARCH ESO INS SLIT12 TYPE = 'RECTANGLE' / Type of SLIT i
HIERARCH ESO INS SLIT12 ID = 132419 / ID of SLIT i
HIERARCH ESO INS SLIT12 OBJ RA = 150.280325 / RA (J2000) of object
HIERARCH ESO INS SLIT12 OBJ DEC = 2.351606 / DEC (J2000) of object
HIERARCH ESO INS SLIT12 X = -35.117 / x co-ordinate of SLIT i
HIERARCH ESO INS SLIT12 Y = -30.854 / y co-ordinate of SLIT i
HIERARCH ESO INS SLIT12 DIMX = 11.322 / Size in x direction of SLIT i
HIERARCH ESO INS SLIT12 DIMY = 0.581 / Size in y direction of SLIT i
HIERARCH ESO INS SLIT13 TYPE = 'RECTANGLE' / Type of SLIT i
HIERARCH ESO INS SLIT13 ID = 132048 / ID of SLIT i
HIERARCH ESO INS SLIT13 OBJ RA = 150.254533 / RA (J2000) of object
HIERARCH ESO INS SLIT13 OBJ DEC = 2.343506 / DEC (J2000) of object
HIERARCH ESO INS SLIT13 X = -20.753 / x co-ordinate of SLIT i
HIERARCH ESO INS SLIT13 Y = -84.791 / y co-ordinate of SLIT i
HIERARCH ESO INS SLIT13 DIMX = 9.297 / Size in x direction of SLIT i
HIERARCH ESO INS SLIT13 DIMY = 0.582 / Size in y direction of SLIT i
HIERARCH ESO INS SLIT14 TYPE = 'RECTANGLE' / Type of SLIT i
HIERARCH ESO INS SLIT14 ID = 131393 / ID of SLIT i
HIERARCH ESO INS SLIT14 OBJ RA = 150.300879 / RA (J2000) of object
HIERARCH ESO INS SLIT14 OBJ DEC = 2.340411 / DEC (J2000) of object
HIERARCH ESO INS SLIT14 X = -12.715 / x co-ordinate of SLIT i
HIERARCH ESO INS SLIT14 Y = 12.107 / y co-ordinate of SLIT i
HIERARCH ESO INS SLIT14 DIMX = 6.315 / Size in x direction of SLIT i
HIERARCH ESO INS SLIT14 DIMY = 0.581 / Size in y direction of SLIT i
HIERARCH ESO INS SLIT15 TYPE = 'RECTANGLE' / Type of SLIT i
HIERARCH ESO INS SLIT15 ID = 131127 / ID of SLIT i
HIERARCH ESO INS SLIT15 OBJ RA = 150.265312 / RA (J2000) of object
HIERARCH ESO INS SLIT15 OBJ DEC = 2.337044 / DEC (J2000) of object
HIERARCH ESO INS SLIT15 X = -5.918 / x co-ordinate of SLIT i
HIERARCH ESO INS SLIT15 Y = -62.244 / y co-ordinate of SLIT i
HIERARCH ESO INS SLIT15 DIMX = 6.793 / Size in x direction of SLIT i
HIERARCH ESO INS SLIT15 DIMY = 0.582 / Size in y direction of SLIT i
HIERARCH ESO INS SLIT16 TYPE = 'RECTANGLE' / Type of SLIT i
HIERARCH ESO INS SLIT16 ID = 131013 / ID of SLIT i
HIERARCH ESO INS SLIT16 OBJ RA = 150.283083 / RA (J2000) of object
HIERARCH ESO INS SLIT16 OBJ DEC = 2.334078 / DEC (J2000) of object
HIERARCH ESO INS SLIT16 X = 0.693 / x co-ordinate of SLIT i
HIERARCH ESO INS SLIT16 Y = -25.086 / y co-ordinate of SLIT i
HIERARCH ESO INS SLIT16 DIMX = 5.958 / Size in x direction of SLIT i
HIERARCH ESO INS SLIT16 DIMY = 0.581 / Size in y direction of SLIT i
HIERARCH ESO INS SLIT17 TYPE = 'RECTANGLE' / Type of SLIT i
HIERARCH ESO INS SLIT17 ID = 130497 / ID of SLIT i
HIERARCH ESO INS SLIT17 OBJ RA = 150.326658 / RA (J2000) of object
HIERARCH ESO INS SLIT17 OBJ DEC = 2.330731 / DEC (J2000) of object
HIERARCH ESO INS SLIT17 X = 7.242 / x co-ordinate of SLIT i
HIERARCH ESO INS SLIT17 Y = 66.006 / y co-ordinate of SLIT i
HIERARCH ESO INS SLIT17 DIMX = 6.673 / Size in x direction of SLIT i
HIERARCH ESO INS SLIT17 DIMY = 0.582 / Size in y direction of SLIT i
HIERARCH ESO INS SLIT18 TYPE = 'RECTANGLE' / Type of SLIT i
HIERARCH ESO INS SLIT18 ID = 130276 / ID of SLIT i
HIERARCH ESO INS SLIT18 OBJ RA = 150.348 / RA (J2000) of object
HIERARCH ESO INS SLIT18 OBJ DEC = 2.326914 / DEC (J2000) of object
HIERARCH ESO INS SLIT18 X = 14.692 / x co-ordinate of SLIT i
HIERARCH ESO INS SLIT18 Y = 110.66 / y co-ordinate of SLIT i
HIERARCH ESO INS SLIT18 DIMX = 7.748 / Size in x direction of SLIT i
HIERARCH ESO INS SLIT18 DIMY = 0.582 / Size in y direction of SLIT i
HIERARCH ESO INS SLIT19 TYPE = 'RECTANGLE' / Type of SLIT i
HIERARCH ESO INS SLIT19 ID = 129957 / ID of SLIT i
HIERARCH ESO INS SLIT19 OBJ RA = 150.3202 / RA (J2000) of object
HIERARCH ESO INS SLIT19 OBJ DEC = 2.323739 / DEC (J2000) of object
HIERARCH ESO INS SLIT19 X = 22.018 / x co-ordinate of SLIT i
HIERARCH ESO INS SLIT19 Y = 52.509 / y co-ordinate of SLIT i
HIERARCH ESO INS SLIT19 DIMX = 6.435 / Size in x direction of SLIT i
HIERARCH ESO INS SLIT19 DIMY = 0.582 / Size in y direction of SLIT i
HIERARCH ESO INS SLIT20 TYPE = 'RECTANGLE' / Type of SLIT i
HIERARCH ESO INS SLIT20 ID = 129553 / ID of SLIT i
HIERARCH ESO INS SLIT20 OBJ RA = 150.2657 / RA (J2000) of object
HIERARCH ESO INS SLIT20 OBJ DEC = 2.320875 / DEC (J2000) of object
HIERARCH ESO INS SLIT20 X = 28.405 / x co-ordinate of SLIT i
HIERARCH ESO INS SLIT20 Y = -61.437 / y co-ordinate of SLIT i
HIERARCH ESO INS SLIT20 DIMX = 5.84 / Size in x direction of SLIT i
HIERARCH ESO INS SLIT20 DIMY = 0.582 / Size in y direction of SLIT i
HIERARCH ESO INS SLIT21 TYPE = 'RECTANGLE' / Type of SLIT i
HIERARCH ESO INS SLIT21 ID = 129940 / ID of SLIT i
HIERARCH ESO INS SLIT21 OBJ RA = 150.358563 / RA (J2000) of object
HIERARCH ESO INS SLIT21 OBJ DEC = 2.317225 / DEC (J2000) of object
HIERARCH ESO INS SLIT21 X = 35.264 / x co-ordinate of SLIT i
HIERARCH ESO INS SLIT21 Y = 132.797 / y co-ordinate of SLIT i
HIERARCH ESO INS SLIT21 DIMX = 7.394 / Size in x direction of SLIT i
HIERARCH ESO INS SLIT21 DIMY = 0.583 / Size in y direction of SLIT i
HIERARCH ESO INS SLIT22 TYPE = 'RECTANGLE' / Type of SLIT i
HIERARCH ESO INS SLIT22 ID = 129028 / ID of SLIT i
HIERARCH ESO INS SLIT22 OBJ RA = 150.302108 / RA (J2000) of object
HIERARCH ESO INS SLIT22 OBJ DEC = 2.314742 / DEC (J2000) of object
HIERARCH ESO INS SLIT22 X = 41.623 / x co-ordinate of SLIT i
HIERARCH ESO INS SLIT22 Y = 14.682 / y co-ordinate of SLIT i
HIERARCH ESO INS SLIT22 DIMX = 4.886 / Size in x direction of SLIT i
HIERARCH ESO INS SLIT22 DIMY = 0.581 / Size in y direction of SLIT i
HIERARCH ESO INS SLIT23 TYPE = 'RECTANGLE' / Type of SLIT i
HIERARCH ESO INS SLIT23 ID = 128901 / ID of SLIT i
HIERARCH ESO INS SLIT23 OBJ RA = 150.318517 / RA (J2000) of object
HIERARCH ESO INS SLIT23 OBJ DEC = 2.31175 / DEC (J2000) of object
HIERARCH ESO INS SLIT23 X = 47.343 / x co-ordinate of SLIT i
HIERARCH ESO INS SLIT23 Y = 48.991 / y co-ordinate of SLIT i
HIERARCH ESO INS SLIT23 DIMX = 6.079 / Size in x direction of SLIT i
HIERARCH ESO INS SLIT23 DIMY = 0.582 / Size in y direction of SLIT i
HIERARCH ESO INS SLIT24 TYPE = 'RECTANGLE' / Type of SLIT i
HIERARCH ESO INS SLIT24 ID = 128682 / ID of SLIT i
HIERARCH ESO INS SLIT24 OBJ RA = 150.324967 / RA (J2000) of object
HIERARCH ESO INS SLIT24 OBJ DEC = 2.309175 / DEC (J2000) of object
HIERARCH ESO INS SLIT24 X = 53.185 / x co-ordinate of SLIT i
HIERARCH ESO INS SLIT24 Y = 62.484 / y co-ordinate of SLIT i
HIERARCH ESO INS SLIT24 DIMX = 5.126 / Size in x direction of SLIT i
HIERARCH ESO INS SLIT24 DIMY = 0.582 / Size in y direction of SLIT i
HIERARCH ESO INS SLIT25 TYPE = 'RECTANGLE' / Type of SLIT i
HIERARCH ESO INS SLIT25 ID = 128528 / ID of SLIT i
HIERARCH ESO INS SLIT25 OBJ RA = 150.324742 / RA (J2000) of object
HIERARCH ESO INS SLIT25 OBJ DEC = 2.305881 / DEC (J2000) of object
HIERARCH ESO INS SLIT25 X = 59.324 / x co-ordinate of SLIT i
HIERARCH ESO INS SLIT25 Y = 62.007 / y co-ordinate of SLIT i
HIERARCH ESO INS SLIT25 DIMX = 6.676 / Size in x direction of SLIT i
HIERARCH ESO INS SLIT25 DIMY = 0.582 / Size in y direction of SLIT i
HIERARCH ESO INS SLIT26 TYPE = 'RECTANGLE' / Type of SLIT i
HIERARCH ESO INS SLIT26 ID = 128053 / ID of SLIT i
HIERARCH ESO INS SLIT26 OBJ RA = 150.301421 / RA (J2000) of object
HIERARCH ESO INS SLIT26 OBJ DEC = 2.302322 / DEC (J2000) of object
HIERARCH ESO INS SLIT26 X = 66.473 / x co-ordinate of SLIT i
HIERARCH ESO INS SLIT26 Y = 13.246 / y co-ordinate of SLIT i
HIERARCH ESO INS SLIT26 DIMX = 7.152 / Size in x direction of SLIT i
HIERARCH ESO INS SLIT26 DIMY = 0.581 / Size in y direction of SLIT i
HIERARCH ESO INS SLIT27 TYPE = 'RECTANGLE' / Type of SLIT i
HIERARCH ESO INS SLIT27 ID = 128133 / ID of SLIT i
HIERARCH ESO INS SLIT27 OBJ RA = 150.313362 / RA (J2000) of object
HIERARCH ESO INS SLIT27 OBJ DEC = 2.299283 / DEC (J2000) of object
HIERARCH ESO INS SLIT27 X = 73.388 / x co-ordinate of SLIT i
HIERARCH ESO INS SLIT27 Y = 38.213 / y co-ordinate of SLIT i
HIERARCH ESO INS SLIT27 DIMX = 6.199 / Size in x direction of SLIT i
HIERARCH ESO INS SLIT27 DIMY = 0.582 / Size in y direction of SLIT i
HIERARCH ESO INS SLIT28 TYPE = 'RECTANGLE' / Type of SLIT i
HIERARCH ESO INS SLIT28 ID = 127508 / ID of SLIT i
HIERARCH ESO INS SLIT28 OBJ RA = 150.323738 / RA (J2000) of object
HIERARCH ESO INS SLIT28 OBJ DEC = 2.294797 / DEC (J2000) of object
HIERARCH ESO INS SLIT28 X = 81.321 / x co-ordinate of SLIT i
HIERARCH ESO INS SLIT28 Y = 59.917 / y co-ordinate of SLIT i
HIERARCH ESO INS SLIT28 DIMX = 9.182 / Size in x direction of SLIT i
HIERARCH ESO INS SLIT28 DIMY = 0.582 / Size in y direction of SLIT i
HIERARCH ESO INS SLIT29 TYPE = 'RECTANGLE' / Type of SLIT i
HIERARCH ESO INS SLIT29 ID = 127314 / ID of SLIT i
HIERARCH ESO INS SLIT29 OBJ RA = 150.296713 / RA (J2000) of object
HIERARCH ESO INS SLIT29 OBJ DEC = 2.291669 / DEC (J2000) of object
HIERARCH ESO INS SLIT29 X = 89.244 / x co-ordinate of SLIT i
HIERARCH ESO INS SLIT29 Y = 3.402 / y co-ordinate of SLIT i
HIERARCH ESO INS SLIT29 DIMX = 6.2 / Size in x direction of SLIT i
HIERARCH ESO INS SLIT29 DIMY = 0.581 / Size in y direction of SLIT i
HIERARCH ESO INS SLIT30 TYPE = 'RECTANGLE' / Type of SLIT i
HIERARCH ESO INS SLIT30 ID = 127180 / ID of SLIT i
HIERARCH ESO INS SLIT30 OBJ RA = 150.317087 / RA (J2000) of object
HIERARCH ESO INS SLIT30 OBJ DEC = 2.288025 / DEC (J2000) of object
HIERARCH ESO INS SLIT30 X = 96.283 / x co-ordinate of SLIT i
HIERARCH ESO INS SLIT30 Y = 46.016 / y co-ordinate of SLIT i
HIERARCH ESO INS SLIT30 DIMX = 7.394 / Size in x direction of SLIT i
HIERARCH ESO INS SLIT30 DIMY = 0.582 / Size in y direction of SLIT i
HIERARCH ESO INS SLIT31 TYPE = 'RECTANGLE' / Type of SLIT i
HIERARCH ESO INS SLIT31 ID = 127438 / ID of SLIT i
HIERARCH ESO INS SLIT31 OBJ RA = 150.321308 / RA (J2000) of object
HIERARCH ESO INS SLIT31 OBJ DEC = 2.28495 / DEC (J2000) of object
HIERARCH ESO INS SLIT31 X = 103.324 / x co-ordinate of SLIT i
HIERARCH ESO INS SLIT31 Y = 54.842 / y co-ordinate of SLIT i
HIERARCH ESO INS SLIT31 DIMX = 6.203 / Size in x direction of SLIT i
HIERARCH ESO INS SLIT31 DIMY = 0.582 / Size in y direction of SLIT i
HIERARCH ESO INS SLIT32 TYPE = 'RECTANGLE' / Type of SLIT i
HIERARCH ESO INS SLIT32 ID = 126585 / ID of SLIT i
HIERARCH ESO INS SLIT32 OBJ RA = 150.324013 / RA (J2000) of object
HIERARCH ESO INS SLIT32 OBJ DEC = 2.282417 / DEC (J2000) of object
HIERARCH ESO INS SLIT32 X = 109.233 / x co-ordinate of SLIT i
HIERARCH ESO INS SLIT32 Y = 60.508 / y co-ordinate of SLIT i
HIERARCH ESO INS SLIT32 DIMX = 5.13 / Size in x direction of SLIT i
HIERARCH ESO INS SLIT32 DIMY = 0.582 / Size in y direction of SLIT i
HIERARCH ESO INS SLIT33 TYPE = 'RECTANGLE' / Type of SLIT i
HIERARCH ESO INS SLIT33 ID = 126275 / ID of SLIT i
HIERARCH ESO INS SLIT33 OBJ RA = 150.301817 / RA (J2000) of object
HIERARCH ESO INS SLIT33 OBJ DEC = 2.279189 / DEC (J2000) of object
HIERARCH ESO INS SLIT33 X = 117.03 / x co-ordinate of SLIT i
HIERARCH ESO INS SLIT33 Y = 14.079 / y co-ordinate of SLIT i
HIERARCH ESO INS SLIT33 DIMX = 10.02 / Size in x direction of SLIT i
HIERARCH ESO INS SLIT33 DIMY = 0.582 / Size in y direction of SLIT i
HIERARCH ESO INS PIXSCALE = 0.205 / Pixel scale
HIERARCH ESO INS MODE = 'MOS ' / Instrument Observation Mode
HIERARCH ESO INS FILT1 FIX = F / Filter mode degraded
HIERARCH ESO INS FILT1 SIM = F / Device Hardware Simulation
HIERARCH ESO INS FILT1 NAME = 'GG475 ' / Filter name
HIERARCH ESO INS FILT1 ID = 'vm-GG475-1.10' / Filter ESO ID
HIERARCH ESO INS MASK1 FIX = F / Mask mode degraded
HIERARCH ESO INS MASK1 SIM = F / Device Hardware Simulation
HIERARCH ESO INS MASK1 NO = 3 / Mask set number
HIERARCH ESO INS FOCU1 FIX = F / Focusing mode degraded
HIERARCH ESO INS FOCU1 SIM = F / Device Hardware Simulation
HIERARCH ESO INS FOCU1 VALUE = 6976.122982 / Camera lens position(micron)
HIERARCH ESO INS FOCU3 FIX = F / Focusing mode degraded
HIERARCH ESO INS FOCU3 SIM = F / Device Hardware Simulation
HIERARCH ESO INS FOCU3 TEMP = 14.629684 / Temperature(C) for the beam
HIERARCH ESO INS FOCU3 VALUE = 5181.099499 / Camera lens position(micron)
HIERARCH ESO INS FOCU2 FIX = F / Focusing mode degraded
HIERARCH ESO INS FOCU2 SIM = F / Device Hardware Simulation
HIERARCH ESO INS FOCU2 TEMP = 14.841312 / Temperature(C) for the beam
HIERARCH ESO INS FOCU2 VALUE = 6081.203659 / Camera lens position(micron)
HIERARCH ESO INS MSHU1 FIX = F / Mask Shutter mode degraded
HIERARCH ESO INS MSHU1 SIM = T / Device Hardware Simulation
HIERARCH ESO INS MSHU1 MODE = 'OFF ' / Mask Shutter mode
HIERARCH ESO INS MSHU1 POSH = 7.348085 / High Mask Shutters positions (mm)
HIERARCH ESO INS MSHU1 POSL = 7.348085 / Low Mask Shutters position (mm)
HIERARCH ESO INS GRIS1 FIX = F / Grism mode degraded
HIERARCH ESO INS GRIS1 SIM = F / Device Hardware Simulation
HIERARCH ESO INS GRIS1 NAME = 'HR_red ' / Grism name
HIERARCH ESO INS GRIS1 ID = 'vm-HRredHolog-1.1' / Grism ESO ID
HIERARCH ESO INS AFC11 FIX = F / AFC mode degraded
HIERARCH ESO INS AFC11 SIM = F / Device Hardware Simulation
HIERARCH ESO INS AFC12 FIX = F / AFC mode degraded
HIERARCH ESO INS AFC12 SIM = F / Device Hardware Simulation
HIERARCH ESO INS FOCU4 FIX = F / Focusing mode degraded
HIERARCH ESO INS FOCU4 SIM = F / Device Hardware Simulation
HIERARCH ESO INS FOCU4 TEMP = 14.588951 / Temperature(C) for the beam
HIERARCH ESO INS FOCU4 VALUE = 7108.120407 / Camera lens position(micron)
HIERARCH ESO INS LAMP1 FIX = F / Lamp[i] mode degraded
HIERARCH ESO INS LAMP1 SIM = F / Device Hardware Simulation
HIERARCH ESO INS LAMP1 TIME = 0 / Lamp lightening time
HIERARCH ESO INS LAMP1 STATE = 'OFF ' / State for this lamp in each box
HIERARCH ESO INS LAMP1 NAME = 'QTH50 ' / Calibration lamp name
HIERARCH ESO INS LAMP1 ID = 'vm-QTH50-1' / Calib. lamp ESO identification
HIERARCH ESO INS LAMP2 FIX = F / Lamp[i] mode degraded
HIERARCH ESO INS LAMP2 SIM = F / Device Hardware Simulation
HIERARCH ESO INS LAMP2 TIME = 0 / Lamp lightening time
HIERARCH ESO INS LAMP2 STATE = 'OFF ' / State for this lamp in each box
HIERARCH ESO INS LAMP2 NAME = 'QTH10 ' / Calibration lamp name
HIERARCH ESO INS LAMP2 ID = 'vm-QTH10-2' / Calib. lamp ESO identification
HIERARCH ESO INS IFUM1 FIX = F / IFU Mask mode degraded
HIERARCH ESO INS IFUM1 SIM = F / Device Hardware Simulation
HIERARCH ESO INS IFUM1 MODE = 'OFF ' / IFU Mask mode
HIERARCH ESO INS LAMP3 FIX = F / Lamp[i] mode degraded
HIERARCH ESO INS LAMP3 SIM = F / Device Hardware Simulation
HIERARCH ESO INS LAMP3 TIME = 0 / Lamp lightening time
HIERARCH ESO INS LAMP3 STATE = 'OFF ' / State for this lamp in each box
HIERARCH ESO INS LAMP3 NAME = 'He ' / Calibration lamp name
HIERARCH ESO INS LAMP3 ID = 'vm-He-3 ' / Calib. lamp ESO identification
HIERARCH ESO INS IFUM2 FIX = F / IFU Mask mode degraded
HIERARCH ESO INS IFUM2 SIM = F / Device Hardware Simulation
HIERARCH ESO INS IFUM2 MODE = 'OFF ' / IFU Mask mode
HIERARCH ESO INS LAMP4 FIX = F / Lamp[i] mode degraded
HIERARCH ESO INS LAMP4 SIM = F / Device Hardware Simulation
HIERARCH ESO INS LAMP4 TIME = 0 / Lamp lightening time
HIERARCH ESO INS LAMP4 STATE = 'OFF ' / State for this lamp in each box
HIERARCH ESO INS LAMP4 NAME = 'Ne ' / Calibration lamp name
HIERARCH ESO INS LAMP4 ID = 'vm-Ne-4 ' / Calib. lamp ESO identification
HIERARCH ESO INS LAMP5 FIX = F / Lamp[i] mode degraded
HIERARCH ESO INS LAMP5 SIM = F / Device Hardware Simulation
HIERARCH ESO INS LAMP5 TIME = 0 / Lamp lightening time
HIERARCH ESO INS LAMP5 STATE = 'OFF ' / State for this lamp in each box
HIERARCH ESO INS LAMP5 NAME = 'Ar ' / Calibration lamp name
HIERARCH ESO INS LAMP5 ID = 'vm-Ar-5 ' / Calib. lamp ESO identification
HIERARCH ESO INS LAMP6 FIX = F / Lamp[i] mode degraded
HIERARCH ESO INS LAMP6 SIM = F / Device Hardware Simulation
HIERARCH ESO INS LAMP6 TIME = 0 / Lamp lightening time
HIERARCH ESO INS LAMP6 STATE = 'OFF ' / State for this lamp in each box
HIERARCH ESO INS LAMP6 NAME = 'Afc ' / Calibration lamp name
HIERARCH ESO INS LAMP6 ID = 'vm-Afc-6' / Calib. lamp ESO identification
HIERARCH ESO INS IFUE FIX = F / IFU Elongator mode degraded
HIERARCH ESO INS IFUE SIM = F / Device Hardware Simulation
HIERARCH ESO INS IFUE MAG = '1:1 ' / IFU Magnification 0.33(1:2) or 0.6
HIERARCH ESO INS IFUS FIX = F / IFU Shutter mode degraded
HIERARCH ESO INS IFUS SIM = F / Device Hardware Simulation
HIERARCH ESO INS IFUS MODE = 'OFF ' / IFU Shutter CLOSED(ON) or OPEN(OFF
HIERARCH ESO DET CHIP1 INDEX = 1 / Chip index
HIERARCH ESO DET CHIP1 ID = 'BRIAN ' / Detector chip identification
HIERARCH ESO DET CHIP1 NAME = 'EEV CCD-44-82' / Detector chip name
HIERARCH ESO DET CHIP1 DATE = '2000-08-30' / Date of installation [YYYY-MM-DD]
HIERARCH ESO DET CHIP1 X = 1 / X location in array
HIERARCH ESO DET CHIP1 Y = 1 / Y location in array
HIERARCH ESO DET CHIP1 NX = 2048 / # of pixels along X
HIERARCH ESO DET CHIP1 NY = 4096 / # of pixels along Y
HIERARCH ESO DET CHIP1 PSZX = 15. / Size of pixel in X
HIERARCH ESO DET CHIP1 PSZY = 15. / Size of pixel in Y
HIERARCH ESO DET CHIP1 XGAP = 0. / Gap between chips along x
HIERARCH ESO DET CHIP1 YGAP = 0. / Gap between chips along y
HIERARCH ESO DET OUT1 INDEX = 1 / Output index
HIERARCH ESO DET OUT1 ID = 'L ' / Output ID as from manufacturer
HIERARCH ESO DET OUT1 NAME = 'L ' / Description of output
HIERARCH ESO DET OUT1 CHIP = 1 / index of chip it belongs to
HIERARCH ESO DET OUT1 X = 1 / X location of output
HIERARCH ESO DET OUT1 Y = 1 / Y location of output
HIERARCH ESO DET OUT1 NX = 2048 / valid pixels along X
HIERARCH ESO DET OUT1 NY = 4096 / valid pixels along Y
HIERARCH ESO DET OUT1 CONAD = 0.55 / Conversion from ADUs to electrons
HIERARCH ESO DET OUT1 RON = 3.21 / [e-] Readout noise per output (ele
HIERARCH ESO DET OUT1 GAIN = 1.82 / Conversion from electrons to ADU
HIERARCH ESO DET ID = 'CCD FIERA - Rev: 238334' / Detector system Id
HIERARCH ESO DET NAME = 'Vimosb - vimosb' / Name of detector system
HIERARCH ESO DET DATE = '2010-07-01' / Installation date
HIERARCH ESO DET DID = 'ESO-VLT-DIC.CCDDCS,ESO-VLT-DIC.FCDDCS' / Diction
HIERARCH ESO DET BITS = 16 / Bits per pixel readout
HIERARCH ESO DET RA = 0. / Apparent 00:00:00.0 RA at start
HIERARCH ESO DET DEC = 0. / Apparent 00:00:00.0 DEC at start
HIERARCH ESO DET CHIPS = 1 / # of chips in detector array
HIERARCH ESO DET OUTPUTS = 1 / # of outputs
HIERARCH ESO DET OUTREF = 0 / reference output
HIERARCH ESO DET WINDOWS = 1 / # of windows readout
HIERARCH ESO DET SOFW MODE = 'Normal ' / CCD sw operational mode
HIERARCH ESO DET EXP NO = 42197 / Unique exposure ID number
HIERARCH ESO DET EXP TYPE = 'Normal ' / Exposure type
HIERARCH ESO DET EXP RDTTIME = 30.939 / image readout time
HIERARCH ESO DET EXP XFERTIM = 44.981 / image transfer time
HIERARCH ESO DET WIN1 ST = T / If T, window enabled
HIERARCH ESO DET WIN1 STRX = 1 / Lower left pixel in X
HIERARCH ESO DET WIN1 STRY = 1 / Lower left pixel in Y
HIERARCH ESO DET WIN1 NX = 2148 / # of pixels along X
HIERARCH ESO DET WIN1 NY = 4096 / # of pixels along Y
HIERARCH ESO DET WIN1 BINX = 1 / Binning factor along X
HIERARCH ESO DET WIN1 BINY = 1 / Binning factor along Y
HIERARCH ESO DET WIN1 NDIT = 1 / # of subintegrations
HIERARCH ESO DET WIN1 UIT1 = 1200. / user defined subintegration time
HIERARCH ESO DET WIN1 DIT1 = 1199.997383 / actual subintegration time
HIERARCH ESO DET WIN1 DKTM = 1200.0992 / Dark current time
HIERARCH ESO DET READ MODE = 'normal ' / Readout method
HIERARCH ESO DET READ SPEED = 'medium ' / Readout speed
HIERARCH ESO DET READ CLOCK = '225kHz,1port,HG' / Readout clock pattern used
HIERARCH ESO DET READ NFRAM = 1 / Number of readouts buffered in sin
HIERARCH ESO DET FRAM ID = 1 / Image sequencial number
HIERARCH ESO DET FRAM TYPE = 'Normal ' / Type of frame
HIERARCH ESO DET SHUT TYPE = 'seso ' / type of shutter
HIERARCH ESO DET SHUT ID = 'VIMOS shutter' / Shutter unique identifier
HIERARCH ESO DET SHUT TMOPEN = 0.074 / Time taken to open shutter
HIERARCH ESO DET SHUT TMCLOS = 0.069 / Time taken to close shutter
HIERARCH ESO DET TELE INT = 900. / Interval between two successive te
HIERARCH ESO DET TELE NO = 7 / # of sources active
HIERARCH ESO DET TLM1 NAME = 'CCD Cold Plate' / Description of telemetry param
HIERARCH ESO DET TLM1 ID = 'CCD_B1_T1' / ID of telemetry sensor
HIERARCH ESO DET TLM1 START = 140.1 / Telemetry value at read start
HIERARCH ESO DET TLM1 END = 139.9 / Telemetry value at read completion
HIERARCH ESO DET TLM2 NAME = 'CCD Cold Plate2' / Description of telemetry para
HIERARCH ESO DET TLM2 ID = 'CCD_B1_T2' / ID of telemetry sensor
HIERARCH ESO DET TLM2 START = 151.6 / Telemetry value at read start
HIERARCH ESO DET TLM2 END = 151.4 / Telemetry value at read completion
HIERARCH ESO DET TLM3 NAME = 'CCD Cold Plate' / Description of telemetry param
HIERARCH ESO DET TLM3 ID = 'CCD_B4_T1' / ID of telemetry sensor
HIERARCH ESO DET TLM3 START = 140. / Telemetry value at read start
HIERARCH ESO DET TLM3 END = 140. / Telemetry value at read completion
HIERARCH ESO DET TLM4 NAME = 'CCD Cold Plate2' / Description of telemetry para
HIERARCH ESO DET TLM4 ID = 'CCD_B4_T2' / ID of telemetry sensor
HIERARCH ESO DET TLM4 START = 140.6 / Telemetry value at read start
HIERARCH ESO DET TLM4 END = 140.6 / Telemetry value at read completion
HIERARCH ESO DET TLM5 NAME = 'FBOX ' / Description of telemetry param.
HIERARCH ESO DET TLM5 ID = 'FBOX ' / ID of telemetry sensor
HIERARCH ESO DET TLM5 START = 288.8 / Telemetry value at read start
HIERARCH ESO DET TLM5 END = 288.7 / Telemetry value at read completion
HIERARCH ESO DET TLM6 NAME = 'Vaccum_B1' / Description of telemetry param.
HIERARCH ESO DET TLM6 ID = 'Vaccum_B1' / ID of telemetry sensor
HIERARCH ESO DET TLM6 START = 0. / Telemetry value at read start
HIERARCH ESO DET TLM6 END = 0. / Telemetry value at read completion
HIERARCH ESO DET TLM7 NAME = 'Vaccum_B4' / Description of telemetry param.
HIERARCH ESO DET TLM7 ID = 'Vaccum_B4' / ID of telemetry sensor
HIERARCH ESO DET TLM7 START = 0. / Telemetry value at read start
HIERARCH ESO DET TLM7 END = 0. / Telemetry value at read completion
HIERARCH ESO PRO EXPTTOT = 4799.988
HIERARCH ESO PRO ANCESTOR = 'VIMOS.2015-01-18T04:03:48.110.fits'
HIERARCH ESO PRO DID = 'PRO-1.15' / Data dictionary for PRO
HIERARCH ESO PRO CATG = 'MOS_SCIENCE_SKY_EXTRACTED' / Category of pipeline produ
HIERARCH ESO PRO TYPE = 'REDUCED ' / Product type
HIERARCH ESO PRO TECH = 'MOS ' / Observation technique
HIERARCH ESO PRO SCIENCE = T / Scientific product if T
HIERARCH ESO PRO REC1 ID = 'vmmosscience' / Pipeline recipe (unique) identifier
HIERARCH ESO PRO REC1 DRS ID = 'cpl-6.5.1' / Data Reduction System identifier
HIERARCH ESO PRO REC1 PIPE ID = 'vimos-2.9.15' / Pipeline (unique) identifier
HIERARCH ESO PRO REC1 RAW1 NAME = 'VIMOS.2015-01-18T04:03:48.110.fits' / File na
HIERARCH ESO PRO REC1 RAW1 CATG = 'MOS_SCIENCE' / Category of raw frame
HIERARCH ESO PRO REC1 RAW2 NAME = 'VIMOS.2015-01-18T04:24:43.107.fits' / File na
HIERARCH ESO PRO REC1 RAW2 CATG = 'MOS_SCIENCE' / Category of raw frame
HIERARCH ESO PRO REC1 RAW3 NAME = 'VIMOS.2015-01-18T04:45:38.102.fits' / File na
HIERARCH ESO PRO REC1 RAW3 CATG = 'MOS_SCIENCE' / Category of raw frame
HIERARCH ESO PRO REC1 RAW4 NAME = 'VIMOS.2015-01-18T05:06:33.097.fits' / File na
HIERARCH ESO PRO REC1 RAW4 CATG = 'MOS_SCIENCE' / Category of raw frame
HIERARCH ESO PRO DATANCOM = 4 / Number of combined frames
HIERARCH ESO PRO REC1 CAL1 NAME = 'M.VIMOS.2010-08-19T16:16:17.563.fits' / File
HIERARCH ESO PRO REC1 CAL1 CATG = 'CONFIG_TABLE' / Category of calibration frame
HIERARCH ESO PRO REC1 CAL1 DATAMD5 = '827358dea0214d1587a3f99820ec5810' / MD5 si
HIERARCH ESO PRO REC1 CAL2 NAME = 'master_bias.fits' / File name of calibration
HIERARCH ESO PRO REC1 CAL2 CATG = 'MASTER_BIAS' / Category of calibration frame
HIERARCH ESO PRO REC1 CAL2 DATAMD5 = 'e61a66abf72ac06c6b41c8c3770404e3' / MD5 si
HIERARCH ESO PRO REC1 CAL3 NAME = 'mos_curv_coeff.fits' / File name of calibrati
HIERARCH ESO PRO REC1 CAL3 CATG = 'MOS_CURV_COEFF' / Category of calibration fra
HIERARCH ESO PRO REC1 CAL3 DATAMD5 = '8c4b8da9b95016a47162e7a44741b6e9' / MD5 si
HIERARCH ESO PRO REC1 CAL4 NAME = 'mos_disp_coeff.fits' / File name of calibrati
HIERARCH ESO PRO REC1 CAL4 CATG = 'MOS_DISP_COEFF' / Category of calibration fra
HIERARCH ESO PRO REC1 CAL4 DATAMD5 = '1c1a4eb0e8edb0d621c99d716b0c63ae' / MD5 si
HIERARCH ESO PRO REC1 CAL5 NAME = 'mos_master_screen_flat.fits' / File name of c
HIERARCH ESO PRO REC1 CAL5 CATG = 'MOS_MASTER_SCREEN_FLAT' / Category of calibra
HIERARCH ESO PRO REC1 CAL5 DATAMD5 = '0f2d03e3af5e30f7485a0a300f70b02f' / MD5 si
HIERARCH ESO PRO REC1 CAL6 NAME = 'mos_slit_location.fits' / File name of calibr
HIERARCH ESO PRO REC1 CAL6 CATG = 'MOS_SLIT_LOCATION' / Category of calibration
HIERARCH ESO PRO REC1 CAL6 DATAMD5 = 'f53c43722c662a5763c5b94db9b2468e' / MD5 si
HIERARCH ESO PRO REC1 PARAM1 NAME = 'dispersion' / Resampling step (Angstrom/pix
HIERARCH ESO PRO REC1 PARAM1 VALUE = '0.6 ' / Default: 0
HIERARCH ESO PRO REC1 PARAM2 NAME = 'skyalign' / Polynomial order for sky lines
HIERARCH ESO PRO REC1 PARAM2 VALUE = '0 ' / Default: 0
HIERARCH ESO PRO REC1 PARAM3 NAME = 'wcolumn ' / Name of sky line catalog table
HIERARCH ESO PRO REC1 PARAM3 VALUE = 'WLEN ' / Default: 'WLEN'
HIERARCH ESO PRO REC1 PARAM4 NAME = 'startwavelength' / Start wavelength in spec
HIERARCH ESO PRO REC1 PARAM4 VALUE = '5800 ' / Default: 0
HIERARCH ESO PRO REC1 PARAM5 NAME = 'endwavelength' / End wavelength in spectral
HIERARCH ESO PRO REC1 PARAM5 VALUE = '9500 ' / Default: 0
HIERARCH ESO PRO REC1 PARAM6 NAME = 'reference' / Reference wavelength for calib
HIERARCH ESO PRO REC1 PARAM6 VALUE = '7948.18 ' / Default: 0
HIERARCH ESO PRO REC1 PARAM7 NAME = 'flux ' / Apply flux conservation
HIERARCH ESO PRO REC1 PARAM7 VALUE = 'true ' / Default: true
HIERARCH ESO PRO REC1 PARAM8 NAME = 'flatfield' / Apply flat field
HIERARCH ESO PRO REC1 PARAM8 VALUE = 'true ' / Default: true
HIERARCH ESO PRO REC1 PARAM9 NAME = 'skyglobal' / Subtract global sky spectrum f
HIERARCH ESO PRO REC1 PARAM9 VALUE = 'false ' / Default: false
HIERARCH ESO PRO REC1 PARAM10 NAME = 'skymedian' / Sky subtraction from extracte
HIERARCH ESO PRO REC1 PARAM10 VALUE = 'false ' / Default: false
HIERARCH ESO PRO REC1 PARAM11 NAME = 'skylocal' / Sky subtraction from CCD slit
HIERARCH ESO PRO REC1 PARAM11 VALUE = 'true ' / Default: true
HIERARCH ESO PRO REC1 PARAM12 NAME = 'cosmics ' / Eliminate cosmic rays hits (on
HIERARCH ESO PRO REC1 PARAM12 VALUE = 'true ' / Default: true
HIERARCH ESO PRO REC1 PARAM13 NAME = 'slit_margin' / Number of pixels to exclude
HIERARCH ESO PRO REC1 PARAM13 VALUE = '3 ' / Default: 3
HIERARCH ESO PRO REC1 PARAM14 NAME = 'ext_radius' / Maximum extraction radius fo
HIERARCH ESO PRO REC1 PARAM14 VALUE = '6 ' / Default: 6
HIERARCH ESO PRO REC1 PARAM15 NAME = 'cont_radius' / Minimum distance at which t
HIERARCH ESO PRO REC1 PARAM15 VALUE = '0 ' / Default: 0
HIERARCH ESO PRO REC1 PARAM16 NAME = 'ext_mode' / Object extraction method: 0 =
HIERARCH ESO PRO REC1 PARAM16 VALUE = '1 ' / Default: 1
HIERARCH ESO PRO REC1 PARAM17 NAME = 'detection' / Object detection threshold (A
HIERARCH ESO PRO REC1 PARAM17 VALUE = '2 ' / Default: 2
HIERARCH ESO PRO REC1 PARAM18 NAME = 'time_normalise' / Normalise output spectra
HIERARCH ESO PRO REC1 PARAM18 VALUE = 'true ' / Default: true
HIERARCH ESO PRO REC1 PARAM19 NAME = 'anyframe' / Look for a standard star in an
HIERARCH ESO PRO REC1 PARAM19 VALUE = 'false ' / Default: false
HIERARCH ESO PRO REC1 PARAM20 NAME = 'response' / Order of polynomial modeling t
HIERARCH ESO PRO REC1 PARAM20 VALUE = '5 ' / Default: 5
HIERARCH ESO PRO REC1 PARAM21 NAME = 'alignment' / Type of alignment of dithered
HIERARCH ESO PRO REC1 PARAM21 VALUE = 'integer ' / Default: 'integer'
HIERARCH ESO PRO REC1 PARAM22 NAME = 'stack_method' / Frames combination method
HIERARCH ESO PRO REC1 PARAM22 VALUE = 'average ' / Default: 'average'
HIERARCH ESO PRO REC1 PARAM23 NAME = 'minrejection' / Number of lowest values to
HIERARCH ESO PRO REC1 PARAM23 VALUE = '1 ' / Default: 1
HIERARCH ESO PRO REC1 PARAM24 NAME = 'maxrejection' / Number of highest values t
HIERARCH ESO PRO REC1 PARAM24 VALUE = '1 ' / Default: 1
HIERARCH ESO PRO REC1 PARAM25 NAME = 'klow ' / Low threshold in ksigma method
HIERARCH ESO PRO REC1 PARAM25 VALUE = '3 ' / Default: 3
HIERARCH ESO PRO REC1 PARAM26 NAME = 'khigh ' / High threshold in ksigma metho
HIERARCH ESO PRO REC1 PARAM26 VALUE = '3 ' / Default: 3
HIERARCH ESO PRO REC1 PARAM27 NAME = 'kiter ' / Max number of iterations in ks
HIERARCH ESO PRO REC1 PARAM27 VALUE = '999 ' / Default: 999
HIERARCH ESO PRO REC1 PARAM28 NAME = 'dither ' / Align dithered frames before s
HIERARCH ESO PRO REC1 PARAM28 VALUE = 'true ' / Default: true
HIERARCH ESO PRO REC1 PARAM29 NAME = 'compute ' / Compute offsets of dithered im
HIERARCH ESO PRO REC1 PARAM29 VALUE = 'false ' / Default: false
HIERARCH ESO PRO REC1 PARAM30 NAME = 'fringing' / Apply fringing correction (onl
HIERARCH ESO PRO REC1 PARAM30 VALUE = 'true ' / Default: true
HIERARCH ESO PRO REC1 PARAM31 NAME = 'offset ' / Minimum required offset betwee
HIERARCH ESO PRO REC1 PARAM31 VALUE = '3 ' / Default: 3
HIERARCH ESO PRO REC1 PARAM32 NAME = 'qc ' / Compute QC1 parameters
HIERARCH ESO PRO REC1 PARAM32 VALUE = 'true ' / Default: true
HIERARCH ESO ADA ABSROT START = 21.56262 / Abs rot angle at exp start
HIERARCH ESO ADA POSANG = 90. / Position angle at start
HIERARCH ESO ADA GUID STATUS = 'ON ' / Status of autoguider
HIERARCH ESO ADA GUID RA = 150.241537 / 10:00:57.9 Guide star RA J2000
HIERARCH ESO ADA GUID DEC = 2.59418 / 02:35:39.0 Guide star DEC J2000
HIERARCH ESO ADA ABSROT PPOS = 'NEG ' / sign of probe position
HIERARCH ESO ADA ABSROT END = 20.56639 / Abs rot angle at exp end
HIERARCH ESO OCS CON QUAD = 1 / Quadrant Number
HIERARCH ESO OCS CMF FILE1 NAME = 'MOS_sky2ccd_1.cmf' / Calibration matrix file
HIERARCH ESO OCS CMF FILE1 CRTEDATE = '2012-05-18T14:37:53' / Calibration matrix
HIERARCH ESO OCS CMF FILE2 NAME = 'MOS_wavecal_HR_red_1.cmf' / Calibration matri
HIERARCH ESO OCS CMF FILE2 CRTEDATE = '2005-10-20T17:18:57' / Calibration matrix
HIERARCH ESO OCS COMP ID = '226602 2012-03-18 17:49:45Z' / OS Software Versi
HIERARCH ESO OCS DID = 'ESO-VLT-DIC.VIMOS_OS-0.2' / Data dictionary for
HISTORY FTU-2_5_2/2015-01-18/REMOVE: XTENSION, "IMAGE"
HISTORY FTU-2_5_2/2015-01-18/REMOVE: EXTNAME, "BRIAN"
HISTORY FTU-2_5_2/2015-01-18/REMOVE: ORIGIN, "VIRMOS OS Software"
HISTORY FTU-2_5_2/2015-01-18/REMOVE: CDELT1, 1.00000000
HISTORY FTU-2_5_2/2015-01-18/REMOVE: CDELT2, 1.00000000
HISTORY FTU-2_5_2/2015-01-18/CHANGE: DET.CHIPS, 1
HISTORY FTU-2_5_2/2015-01-18/CHANGE: DET.OUTPUTS, 1
HISTORY FTU-2_5_2/2015-01-18/CHANGE: DET.WIN1.NX, 2148
COMMENT FTU-2_5_2/2015-01-18T04:24:44/vimos.ftt
CHECKSUM= 'NMTOQMTNNMTNNMTN' / HDU checksum updated 2015-01-26T12:24:13
DATASUM = '338047765' / data unit checksum updated 2015-01-26T12:24:13
Developer note#
I would appreciate the interactive tools here to zoom and pan through the 2D spectrum. Hoovering to know the precise wavelength of a feature would also be very useful. With that, the interactive tool could show automatically the calibration in wavelength reading it from the header.
plt.figure(figsize=[20,20])
plt.imshow(hdu2d[0].data)
plt.xlim(2000,3000) #spec is very big, plot just a bit
(2000.0, 3000.0)
Now work with 1D spectrum#
Calibrate (in wavelength), inspect, and write in Spectrum1D object#
hdu1d = fits.open(file1d)
hdu1dwht = fits.open(file1dwht)
hdu1d.info()
Filename: ./mos_spectroscopy/observed/legac_M1_v3.7_spec1d_130902.fits
No. Name Ver Type Cards Dimensions Format
0 PRIMARY 1 PrimaryHDU 715 (6166,) float32
hdu1d[0].header
SIMPLE = T / file does conform to FITS standard
BITPIX = -32 / number of bits per data pixel
NAXIS = 1 / number of data axes
NAXIS1 = 6166 / length of data axis 1
EXTEND = T / FITS dataset may contain extensions
COMMENT FITS (Flexible Image Transport System) format is defined in 'Astronomy
COMMENT and Astrophysics', volume 376, page 359; bibcode: 2001A&A...376..359H
DATE = '2015-01-26T12:24:07' / file creation date (YYYY-MM-DDThh:mm:ss UT)
ORIGIN = 'ESO ' / European Southern Observatory
MJD-OBS = 57040.16930682 / Obs start 2015-01-18T04:03:48.109
DATE-OBS= '2015-01-18T04:03:48.108' / Date of observation
EXPTIME = 1199.997 / Total integration time. 00:19:59.997
TELESCOP= 'ESO-VLT-U3' / ESO <TEL>
RA = 150.220555 / 10:00:52.9 RA (J2000) pointing
DEC = 2.41104 / 02:24:39.7 DEC (J2000) pointing
EQUINOX = 2000. / Standard FK5
RADECSYS= 'FK5 ' / Coordinate reference frame
LST = 25866.379 / 07:11:06.379 LST at start
UTC = 14623. / 04:03:43.000 UT at start
OBSERVER= 'VIMOS ' / Name of observer
INSTRUME= 'VIMOS ' / Instrument used
PI-COI = '555555555' / Name of PI and COI
OBJECT = 'COSMOS_M01' / Original target
CRVAL1 = 5800.3 / 10:00:52.9, RA at ref pixel
CRPIX1 = 1. / Reference pixel in X
CTYPE1 = 'LINEAR ' / pixel coordinate system
CRVAL2 = 1. / 02:24:39.7, DEC at ref pixel
CRPIX2 = 1. / Reference pixel in Y
CTYPE2 = 'PIXEL ' / pixel coordinate system
INHERIT = T / denotes the INHERIT keyword convention
CD1_1 = 0.6 / Translation matrix element
CD1_2 = 0. / Translation matrix element
CD2_1 = 0. / Translation matrix element
CD2_2 = 1. / Translation matrix element
DATAMD5 = '77a1ef86719040e2fea8d1d96fef35e0' / MD5 checksum
PIPEFILE= 'mos_science_sky_extracted.fits' / Filename of data product
ARCFILE = 'VIMOS.2015-01-18T04:03:48.110.fits' / Archive File Name
HIERARCH ESO OBS DID = 'ESO-VLT-DIC.OBS-1.12' / OBS Dictionary
HIERARCH ESO OBS EXECTIME = 6835 / Expected execution time
HIERARCH ESO OBS GRP = '0 ' / linked blocks
HIERARCH ESO OBS ID = 1163772 / Observation block ID
HIERARCH ESO OBS NAME = 'legac_M01_2' / OB name
HIERARCH ESO OBS OBSERVER = 'UNKNOWN ' / Observer Name
HIERARCH ESO OBS PI-COI ID = 73498 / ESO internal PI-COI ID
HIERARCH ESO OBS PI-COI NAME = 'UNKNOWN ' / PI-COI name
HIERARCH ESO OBS PROG ID = '194.A-2005(B)' / ESO program identification
HIERARCH ESO OBS START = '2015-01-18T03:38:14' / OB start time
HIERARCH ESO OBS NTPL = 3 / Number of templates within OB
HIERARCH ESO OBS TPLNO = 2 / Template number within OB
HIERARCH ESO OBS AIRM = 2. / Req. max. airmass
HIERARCH ESO OBS AMBI FWHM = 1.3 / Req. max. seeing
HIERARCH ESO OBS AMBI TRANS = '2CLR ' / Req. sky transparency
HIERARCH ESO OBS ATM = 'NATM ' / Req. Atmospheric Turbulence Model
HIERARCH ESO OBS CONTAINER ID = -999 / Scheduling container ID
HIERARCH ESO OBS CONTAINER TYPE = 'U ' / Scheduling container type
HIERARCH ESO OBS MOON DIST = 120 / Req. min. angular dist. from moon
HIERARCH ESO OBS MOON FLI = 0.3 / Req. max. fractional lunar illum.
HIERARCH ESO OBS STREHLRATIO = 0. / Req. strehl ratio
HIERARCH ESO OBS TARG NAME = 'COSMOS_M01' / OB target name
HIERARCH ESO OBS TWILIGHT = -15 / Req. twilight
HIERARCH ESO OBS WATERVAPOUR = 0. / Req. water vapour
HIERARCH ESO TPL FILE DIRNAME = '$INS_ROOT/$INS_USER/ADF' / Storage filename
HIERARCH ESO TPL FILE KEEP = T / paramfile keep-flag
HIERARCH ESO TPL DID = 'ESO-VLT-DIC.TPL-1.9' / Data dictionary for TPL
HIERARCH ESO TPL ID = 'VIMOS_mos_obs_Offset' / Template signature ID
HIERARCH ESO TPL NAME = 'MOS Observation' / Template name
HIERARCH ESO TPL PRESEQ = 'VIMOS_mos_obs_Offset' / Sequencer script
HIERARCH ESO TPL START = '2015-01-18T04:01:12' / TPL start time
HIERARCH ESO TPL VERSION = '@(#) $Revision: 77996 $' / Version of the templa
HIERARCH ESO TPL NEXP = 4 / Number of exposures within templat
HIERARCH ESO TPL EXPNO = 1 / Exposure number within template
HIERARCH ESO TEL DID = 'ESO-VLT-DIC.TCS' / Data dictionary for TEL
HIERARCH ESO TEL ID = 'v 261159' / TCS version number
HIERARCH ESO TEL DATE = '2000-01-01T00:00:00' / TCS installation date
HIERARCH ESO TEL ALT = 40.643 / Alt angle at start
HIERARCH ESO TEL AZ = 243.107 / Az angle at start S=0,W=90
HIERARCH ESO TEL GEOELEV = 2648. / Elevation above sea level (m)
HIERARCH ESO TEL GEOLAT = -24.6268 / Tel geo latitute (+=North)
HIERARCH ESO TEL GEOLON = -70.4045 / Tel geo longitude (+=East)
HIERARCH ESO TEL OPER = 'I, Condor' / Telescope Operator
HIERARCH ESO TEL FOCU ID = 'NB ' / Telescope focus station ID
HIERARCH ESO TEL FOCU LEN = 120. / Focal length
HIERARCH ESO TEL FOCU SCALE = 1.718 / Focal scale
HIERARCH ESO TEL FOCU VALUE = -31.348 / M2 setting
HIERARCH ESO TEL PARANG START = -125.768 / Parallactic angle at start
HIERARCH ESO TEL AIRM START = 1.533 / Airmass at start
HIERARCH ESO TEL AMBI FWHM START = 1.08 / Observatory Seeing queried from AS
HIERARCH ESO TEL AMBI PRES START = 744.4 / Observatory ambient air pressure q
HIERARCH ESO TEL AMBI WINDSP = 0.82 / Observatory ambient wind speed que
HIERARCH ESO TEL AMBI WINDDIR = 325.5 / Observatory ambient wind direction
HIERARCH ESO TEL AMBI RHUM = 3. / Observatory ambient relative humid
HIERARCH ESO TEL AMBI TEMP = 15.77 / Observatory ambient temperature qu
HIERARCH ESO TEL MOON RA = 265.331996 / 17:41:19.6 RA (J2000)
HIERARCH ESO TEL MOON DEC = -17.93387 / -17:56:01.9 DEC (J2000)
HIERARCH ESO TEL TH M1 TEMP = 13.63 / M1 superficial temperature
HIERARCH ESO TEL TRAK STATUS = 'NORMAL ' / Tracking status
HIERARCH ESO TEL DOME STATUS = 'FULLY-OPEN' / Dome status
HIERARCH ESO TEL CHOP ST = F / True when chopping is active
HIERARCH ESO TEL TARG ALPHA = 100052.8 / Alpha coordinate for the target
HIERARCH ESO TEL TARG DELTA = 22436. / Delta coordinate for the target
HIERARCH ESO TEL TARG EPOCH = 2000. / Epoch
HIERARCH ESO TEL TARG EPOCHSYSTEM = 'J ' / Epoch system (default J=Julian)
HIERARCH ESO TEL TARG EQUINOX = 2000. / Equinox
HIERARCH ESO TEL TARG PMA = 0. / Proper Motion Alpha
HIERARCH ESO TEL TARG PMD = 0. / Proper motion Delta
HIERARCH ESO TEL TARG RADVEL = 0. / Radial velocity
HIERARCH ESO TEL TARG PARALLAX = 0. / Parallax
HIERARCH ESO TEL TARG COORDTYPE = 'M ' / Coordinate type (M=mean A=apparen
HIERARCH ESO TEL PARANG END = -128.789 / Parallactic angle at end
HIERARCH ESO TEL AIRM END = 1.421 / Airmass at end
HIERARCH ESO TEL AMBI FWHM END = 1.03 / Observatory Seeing queried from AS
HIERARCH ESO TEL IA FWHM = 1. / Delivered seeing corrected by airm
HIERARCH ESO TEL IA FWHMLIN = 1.01 / Delivered seeing on IA detector (l
HIERARCH ESO TEL IA FWHMLINOBS = 1.25 / Delivered seeing on IA detector (l
HIERARCH ESO TEL AMBI PRES END = 744.3 / Observatory ambient air pressure q
HIERARCH ESO TEL AMBI TAU0 = 0.0039 / Average coherence time
HIERARCH ESO TEL GS1 ALPHA = 100057.969 / Guide Star alpha
HIERARCH ESO TEL GS1 DELTA = 23539.05 / Guide Star delta
HIERARCH ESO TEL GS1 PPOS = 'NEG ' / Selected probe position (POS or NE
HIERARCH ESO TEL TARG NAME = ' ' / Name of special target position
HIERARCH ESO INS SWSIM = 'NORMAL ' / Software simulation
HIERARCH ESO INS ID = 'VIMOS ' / Instrument identification
HIERARCH ESO INS DID = 'ESO-VLT-DIC.VIMOS_ICS-242857' / Data dictionary
HIERARCH ESO INS SOFT DATE = 'Mar 20 2014' / Instrument SW Release date
HIERARCH ESO INS SOFT ID = '186976 ' / Version of ICS
HIERARCH ESO INS FOCU1 TEMP = 14.61792 / Temperature(C) for the beam
HIERARCH ESO INS ADF TYPE = 'MOS ' / Type of ADF
HIERARCH ESO INS ADF VERSION = 3.28 / Version of ADF
HIERARCH ESO INS ADF UNIT = 'MILLIMETER' / Unit of slit/object coordinates
HIERARCH ESO INS ADF ID = 'legac_M1Q1_HR_Red_M1Q1.adp' / Name for the ADF
HIERARCH ESO INS ADF ADMID = '2015-01-18T03:38:06-101-1.adm' / Name for the *.
HIERARCH ESO INS ADF COMMENT = ' ' / Optional user comment for ADF
HIERARCH ESO INS MASK1 ID = 103063 / Mask identification number
HIERARCH ESO INS ADF GRISM NAME = 'HR_Red ' / Grism name
HIERARCH ESO INS ADF GRISM SPECTLEN = 4096. / Spectrum length in pixels
HIERARCH ESO INS ADF SKYREG = 1.8 / Sky region in arcsec
HIERARCH ESO INS REF NO = 1 / Number of reference apertures
HIERARCH ESO INS ARC NO = 0 / Number of curved apertures
HIERARCH ESO INS SLIT NO = 33 / Number of all apertures but refere
HIERARCH ESO INS SHU NO = 1 / Number of shutter positions
HIERARCH ESO INS SHU1 POSL = 0. / Lower shutter positions
HIERARCH ESO INS SHU1 POSH = 2440. / Upper shutter positions
HIERARCH ESO INS REF1 TYPE = 'SQUARE ' / Type of REF i
HIERARCH ESO INS REF1 ID = 132308 / ID of REF i
HIERARCH ESO INS REF1 OBJ RA = 150.345742 / RA (J2000) of object
HIERARCH ESO INS REF1 OBJ DEC = 2.347825 / DEC (J2000) of object
HIERARCH ESO INS REF1 X = -27.353 / x co-ordinate of REF i
HIERARCH ESO INS REF1 Y = 105.937 / y co-ordinate of REF i
HIERARCH ESO INS REF1 DIMX = 3.576 / Size in x direction of REF i
HIERARCH ESO INS REF1 DIMY = 3.579 / Size in y direction of REF i
HIERARCH ESO INS SLIT1 TYPE = 'RECTANGLE' / Type of SLIT i
HIERARCH ESO INS SLIT1 ID = 135357 / ID of SLIT i
HIERARCH ESO INS SLIT1 OBJ RA = 150.295375 / RA (J2000) of object
HIERARCH ESO INS SLIT1 OBJ DEC = 2.387456 / DEC (J2000) of object
HIERARCH ESO INS SLIT1 X = -114.091 / x co-ordinate of SLIT i
HIERARCH ESO INS SLIT1 Y = 0.598 / y co-ordinate of SLIT i
HIERARCH ESO INS SLIT1 DIMX = 11.926 / Size in x direction of SLIT i
HIERARCH ESO INS SLIT1 DIMY = 0.582 / Size in y direction of SLIT i
HIERARCH ESO INS SLIT2 TYPE = 'RECTANGLE' / Type of SLIT i
HIERARCH ESO INS SLIT2 ID = 135418 / ID of SLIT i
HIERARCH ESO INS SLIT2 OBJ RA = 150.294267 / RA (J2000) of object
HIERARCH ESO INS SLIT2 OBJ DEC = 2.384864 / DEC (J2000) of object
HIERARCH ESO INS SLIT2 X = -105.266 / x co-ordinate of SLIT i
HIERARCH ESO INS SLIT2 Y = -1.718 / y co-ordinate of SLIT i
HIERARCH ESO INS SLIT2 DIMX = 5.247 / Size in x direction of SLIT i
HIERARCH ESO INS SLIT2 DIMY = 0.582 / Size in y direction of SLIT i
HIERARCH ESO INS SLIT3 TYPE = 'RECTANGLE' / Type of SLIT i
HIERARCH ESO INS SLIT3 ID = 134929 / ID of SLIT i
HIERARCH ESO INS SLIT3 OBJ RA = 150.314113 / RA (J2000) of object
HIERARCH ESO INS SLIT3 OBJ DEC = 2.381319 / DEC (J2000) of object
HIERARCH ESO INS SLIT3 X = -98.833 / x co-ordinate of SLIT i
HIERARCH ESO INS SLIT3 Y = 39.782 / y co-ordinate of SLIT i
HIERARCH ESO INS SLIT3 DIMX = 7.155 / Size in x direction of SLIT i
HIERARCH ESO INS SLIT3 DIMY = 0.582 / Size in y direction of SLIT i
HIERARCH ESO INS SLIT4 TYPE = 'RECTANGLE' / Type of SLIT i
HIERARCH ESO INS SLIT4 ID = 134657 / ID of SLIT i
HIERARCH ESO INS SLIT4 OBJ RA = 150.333579 / RA (J2000) of object
HIERARCH ESO INS SLIT4 OBJ DEC = 2.377983 / DEC (J2000) of object
HIERARCH ESO INS SLIT4 X = -91.636 / x co-ordinate of SLIT i
HIERARCH ESO INS SLIT4 Y = 80.503 / y co-ordinate of SLIT i
HIERARCH ESO INS SLIT4 DIMX = 6.799 / Size in x direction of SLIT i
HIERARCH ESO INS SLIT4 DIMY = 0.582 / Size in y direction of SLIT i
HIERARCH ESO INS SLIT5 TYPE = 'RECTANGLE' / Type of SLIT i
HIERARCH ESO INS SLIT5 ID = 134371 / ID of SLIT i
HIERARCH ESO INS SLIT5 OBJ RA = 150.297429 / RA (J2000) of object
HIERARCH ESO INS SLIT5 OBJ DEC = 2.374828 / DEC (J2000) of object
HIERARCH ESO INS SLIT5 X = -84.818 / x co-ordinate of SLIT i
HIERARCH ESO INS SLIT5 Y = 4.892 / y co-ordinate of SLIT i
HIERARCH ESO INS SLIT5 DIMX = 6.318 / Size in x direction of SLIT i
HIERARCH ESO INS SLIT5 DIMY = 0.581 / Size in y direction of SLIT i
HIERARCH ESO INS SLIT6 TYPE = 'RECTANGLE' / Type of SLIT i
HIERARCH ESO INS SLIT6 ID = 134169 / ID of SLIT i
HIERARCH ESO INS SLIT6 OBJ RA = 150.29875 / RA (J2000) of object
HIERARCH ESO INS SLIT6 OBJ DEC = 2.372181 / DEC (J2000) of object
HIERARCH ESO INS SLIT6 X = -78.739 / x co-ordinate of SLIT i
HIERARCH ESO INS SLIT6 Y = 7.657 / y co-ordinate of SLIT i
HIERARCH ESO INS SLIT6 DIMX = 5.364 / Size in x direction of SLIT i
HIERARCH ESO INS SLIT6 DIMY = 0.581 / Size in y direction of SLIT i
HIERARCH ESO INS SLIT7 TYPE = 'RECTANGLE' / Type of SLIT i
HIERARCH ESO INS SLIT7 ID = 133783 / ID of SLIT i
HIERARCH ESO INS SLIT7 OBJ RA = 150.279029 / RA (J2000) of object
HIERARCH ESO INS SLIT7 OBJ DEC = 2.368242 / DEC (J2000) of object
HIERARCH ESO INS SLIT7 X = -71.828 / x co-ordinate of SLIT i
HIERARCH ESO INS SLIT7 Y = -33.576 / y co-ordinate of SLIT i
HIERARCH ESO INS SLIT7 DIMX = 7.987 / Size in x direction of SLIT i
HIERARCH ESO INS SLIT7 DIMY = 0.582 / Size in y direction of SLIT i
HIERARCH ESO INS SLIT8 TYPE = 'RECTANGLE' / Type of SLIT i
HIERARCH ESO INS SLIT8 ID = 133480 / ID of SLIT i
HIERARCH ESO INS SLIT8 OBJ RA = 150.338367 / RA (J2000) of object
HIERARCH ESO INS SLIT8 OBJ DEC = 2.364314 / DEC (J2000) of object
HIERARCH ESO INS SLIT8 X = -63.618 / x co-ordinate of SLIT i
HIERARCH ESO INS SLIT8 Y = 90.513 / y co-ordinate of SLIT i
HIERARCH ESO INS SLIT8 DIMX = 7.988 / Size in x direction of SLIT i
HIERARCH ESO INS SLIT8 DIMY = 0.582 / Size in y direction of SLIT i
HIERARCH ESO INS SLIT9 TYPE = 'RECTANGLE' / Type of SLIT i
HIERARCH ESO INS SLIT9 ID = 133163 / ID of SLIT i
HIERARCH ESO INS SLIT9 OBJ RA = 150.336546 / RA (J2000) of object
HIERARCH ESO INS SLIT9 OBJ DEC = 2.36105 / DEC (J2000) of object
HIERARCH ESO INS SLIT9 X = -56.106 / x co-ordinate of SLIT i
HIERARCH ESO INS SLIT9 Y = 86.692 / y co-ordinate of SLIT i
HIERARCH ESO INS SLIT9 DIMX = 6.557 / Size in x direction of SLIT i
HIERARCH ESO INS SLIT9 DIMY = 0.582 / Size in y direction of SLIT i
HIERARCH ESO INS SLIT10 TYPE = 'RECTANGLE' / Type of SLIT i
HIERARCH ESO INS SLIT10 ID = 133098 / ID of SLIT i
HIERARCH ESO INS SLIT10 OBJ RA = 150.292 / RA (J2000) of object
HIERARCH ESO INS SLIT10 OBJ DEC = 2.358644 / DEC (J2000) of object
HIERARCH ESO INS SLIT10 X = -50.193 / x co-ordinate of SLIT i
HIERARCH ESO INS SLIT10 Y = -6.454 / y co-ordinate of SLIT i
HIERARCH ESO INS SLIT10 DIMX = 4.767 / Size in x direction of SLIT i
HIERARCH ESO INS SLIT10 DIMY = 0.581 / Size in y direction of SLIT i
HIERARCH ESO INS SLIT11 TYPE = 'RECTANGLE' / Type of SLIT i
HIERARCH ESO INS SLIT11 ID = 132633 / ID of SLIT i
HIERARCH ESO INS SLIT11 OBJ RA = 150.276625 / RA (J2000) of object
HIERARCH ESO INS SLIT11 OBJ DEC = 2.355419 / DEC (J2000) of object
HIERARCH ESO INS SLIT11 X = -44.294 / x co-ordinate of SLIT i
HIERARCH ESO INS SLIT11 Y = -38.594 / y co-ordinate of SLIT i
HIERARCH ESO INS SLIT11 DIMX = 6.555 / Size in x direction of SLIT i
HIERARCH ESO INS SLIT11 DIMY = 0.581 / Size in y direction of SLIT i
HIERARCH ESO INS SLIT12 TYPE = 'RECTANGLE' / Type of SLIT i
HIERARCH ESO INS SLIT12 ID = 132419 / ID of SLIT i
HIERARCH ESO INS SLIT12 OBJ RA = 150.280325 / RA (J2000) of object
HIERARCH ESO INS SLIT12 OBJ DEC = 2.351606 / DEC (J2000) of object
HIERARCH ESO INS SLIT12 X = -35.117 / x co-ordinate of SLIT i
HIERARCH ESO INS SLIT12 Y = -30.854 / y co-ordinate of SLIT i
HIERARCH ESO INS SLIT12 DIMX = 11.322 / Size in x direction of SLIT i
HIERARCH ESO INS SLIT12 DIMY = 0.581 / Size in y direction of SLIT i
HIERARCH ESO INS SLIT13 TYPE = 'RECTANGLE' / Type of SLIT i
HIERARCH ESO INS SLIT13 ID = 132048 / ID of SLIT i
HIERARCH ESO INS SLIT13 OBJ RA = 150.254533 / RA (J2000) of object
HIERARCH ESO INS SLIT13 OBJ DEC = 2.343506 / DEC (J2000) of object
HIERARCH ESO INS SLIT13 X = -20.753 / x co-ordinate of SLIT i
HIERARCH ESO INS SLIT13 Y = -84.791 / y co-ordinate of SLIT i
HIERARCH ESO INS SLIT13 DIMX = 9.297 / Size in x direction of SLIT i
HIERARCH ESO INS SLIT13 DIMY = 0.582 / Size in y direction of SLIT i
HIERARCH ESO INS SLIT14 TYPE = 'RECTANGLE' / Type of SLIT i
HIERARCH ESO INS SLIT14 ID = 131393 / ID of SLIT i
HIERARCH ESO INS SLIT14 OBJ RA = 150.300879 / RA (J2000) of object
HIERARCH ESO INS SLIT14 OBJ DEC = 2.340411 / DEC (J2000) of object
HIERARCH ESO INS SLIT14 X = -12.715 / x co-ordinate of SLIT i
HIERARCH ESO INS SLIT14 Y = 12.107 / y co-ordinate of SLIT i
HIERARCH ESO INS SLIT14 DIMX = 6.315 / Size in x direction of SLIT i
HIERARCH ESO INS SLIT14 DIMY = 0.581 / Size in y direction of SLIT i
HIERARCH ESO INS SLIT15 TYPE = 'RECTANGLE' / Type of SLIT i
HIERARCH ESO INS SLIT15 ID = 131127 / ID of SLIT i
HIERARCH ESO INS SLIT15 OBJ RA = 150.265312 / RA (J2000) of object
HIERARCH ESO INS SLIT15 OBJ DEC = 2.337044 / DEC (J2000) of object
HIERARCH ESO INS SLIT15 X = -5.918 / x co-ordinate of SLIT i
HIERARCH ESO INS SLIT15 Y = -62.244 / y co-ordinate of SLIT i
HIERARCH ESO INS SLIT15 DIMX = 6.793 / Size in x direction of SLIT i
HIERARCH ESO INS SLIT15 DIMY = 0.582 / Size in y direction of SLIT i
HIERARCH ESO INS SLIT16 TYPE = 'RECTANGLE' / Type of SLIT i
HIERARCH ESO INS SLIT16 ID = 131013 / ID of SLIT i
HIERARCH ESO INS SLIT16 OBJ RA = 150.283083 / RA (J2000) of object
HIERARCH ESO INS SLIT16 OBJ DEC = 2.334078 / DEC (J2000) of object
HIERARCH ESO INS SLIT16 X = 0.693 / x co-ordinate of SLIT i
HIERARCH ESO INS SLIT16 Y = -25.086 / y co-ordinate of SLIT i
HIERARCH ESO INS SLIT16 DIMX = 5.958 / Size in x direction of SLIT i
HIERARCH ESO INS SLIT16 DIMY = 0.581 / Size in y direction of SLIT i
HIERARCH ESO INS SLIT17 TYPE = 'RECTANGLE' / Type of SLIT i
HIERARCH ESO INS SLIT17 ID = 130497 / ID of SLIT i
HIERARCH ESO INS SLIT17 OBJ RA = 150.326658 / RA (J2000) of object
HIERARCH ESO INS SLIT17 OBJ DEC = 2.330731 / DEC (J2000) of object
HIERARCH ESO INS SLIT17 X = 7.242 / x co-ordinate of SLIT i
HIERARCH ESO INS SLIT17 Y = 66.006 / y co-ordinate of SLIT i
HIERARCH ESO INS SLIT17 DIMX = 6.673 / Size in x direction of SLIT i
HIERARCH ESO INS SLIT17 DIMY = 0.582 / Size in y direction of SLIT i
HIERARCH ESO INS SLIT18 TYPE = 'RECTANGLE' / Type of SLIT i
HIERARCH ESO INS SLIT18 ID = 130276 / ID of SLIT i
HIERARCH ESO INS SLIT18 OBJ RA = 150.348 / RA (J2000) of object
HIERARCH ESO INS SLIT18 OBJ DEC = 2.326914 / DEC (J2000) of object
HIERARCH ESO INS SLIT18 X = 14.692 / x co-ordinate of SLIT i
HIERARCH ESO INS SLIT18 Y = 110.66 / y co-ordinate of SLIT i
HIERARCH ESO INS SLIT18 DIMX = 7.748 / Size in x direction of SLIT i
HIERARCH ESO INS SLIT18 DIMY = 0.582 / Size in y direction of SLIT i
HIERARCH ESO INS SLIT19 TYPE = 'RECTANGLE' / Type of SLIT i
HIERARCH ESO INS SLIT19 ID = 129957 / ID of SLIT i
HIERARCH ESO INS SLIT19 OBJ RA = 150.3202 / RA (J2000) of object
HIERARCH ESO INS SLIT19 OBJ DEC = 2.323739 / DEC (J2000) of object
HIERARCH ESO INS SLIT19 X = 22.018 / x co-ordinate of SLIT i
HIERARCH ESO INS SLIT19 Y = 52.509 / y co-ordinate of SLIT i
HIERARCH ESO INS SLIT19 DIMX = 6.435 / Size in x direction of SLIT i
HIERARCH ESO INS SLIT19 DIMY = 0.582 / Size in y direction of SLIT i
HIERARCH ESO INS SLIT20 TYPE = 'RECTANGLE' / Type of SLIT i
HIERARCH ESO INS SLIT20 ID = 129553 / ID of SLIT i
HIERARCH ESO INS SLIT20 OBJ RA = 150.2657 / RA (J2000) of object
HIERARCH ESO INS SLIT20 OBJ DEC = 2.320875 / DEC (J2000) of object
HIERARCH ESO INS SLIT20 X = 28.405 / x co-ordinate of SLIT i
HIERARCH ESO INS SLIT20 Y = -61.437 / y co-ordinate of SLIT i
HIERARCH ESO INS SLIT20 DIMX = 5.84 / Size in x direction of SLIT i
HIERARCH ESO INS SLIT20 DIMY = 0.582 / Size in y direction of SLIT i
HIERARCH ESO INS SLIT21 TYPE = 'RECTANGLE' / Type of SLIT i
HIERARCH ESO INS SLIT21 ID = 129940 / ID of SLIT i
HIERARCH ESO INS SLIT21 OBJ RA = 150.358563 / RA (J2000) of object
HIERARCH ESO INS SLIT21 OBJ DEC = 2.317225 / DEC (J2000) of object
HIERARCH ESO INS SLIT21 X = 35.264 / x co-ordinate of SLIT i
HIERARCH ESO INS SLIT21 Y = 132.797 / y co-ordinate of SLIT i
HIERARCH ESO INS SLIT21 DIMX = 7.394 / Size in x direction of SLIT i
HIERARCH ESO INS SLIT21 DIMY = 0.583 / Size in y direction of SLIT i
HIERARCH ESO INS SLIT22 TYPE = 'RECTANGLE' / Type of SLIT i
HIERARCH ESO INS SLIT22 ID = 129028 / ID of SLIT i
HIERARCH ESO INS SLIT22 OBJ RA = 150.302108 / RA (J2000) of object
HIERARCH ESO INS SLIT22 OBJ DEC = 2.314742 / DEC (J2000) of object
HIERARCH ESO INS SLIT22 X = 41.623 / x co-ordinate of SLIT i
HIERARCH ESO INS SLIT22 Y = 14.682 / y co-ordinate of SLIT i
HIERARCH ESO INS SLIT22 DIMX = 4.886 / Size in x direction of SLIT i
HIERARCH ESO INS SLIT22 DIMY = 0.581 / Size in y direction of SLIT i
HIERARCH ESO INS SLIT23 TYPE = 'RECTANGLE' / Type of SLIT i
HIERARCH ESO INS SLIT23 ID = 128901 / ID of SLIT i
HIERARCH ESO INS SLIT23 OBJ RA = 150.318517 / RA (J2000) of object
HIERARCH ESO INS SLIT23 OBJ DEC = 2.31175 / DEC (J2000) of object
HIERARCH ESO INS SLIT23 X = 47.343 / x co-ordinate of SLIT i
HIERARCH ESO INS SLIT23 Y = 48.991 / y co-ordinate of SLIT i
HIERARCH ESO INS SLIT23 DIMX = 6.079 / Size in x direction of SLIT i
HIERARCH ESO INS SLIT23 DIMY = 0.582 / Size in y direction of SLIT i
HIERARCH ESO INS SLIT24 TYPE = 'RECTANGLE' / Type of SLIT i
HIERARCH ESO INS SLIT24 ID = 128682 / ID of SLIT i
HIERARCH ESO INS SLIT24 OBJ RA = 150.324967 / RA (J2000) of object
HIERARCH ESO INS SLIT24 OBJ DEC = 2.309175 / DEC (J2000) of object
HIERARCH ESO INS SLIT24 X = 53.185 / x co-ordinate of SLIT i
HIERARCH ESO INS SLIT24 Y = 62.484 / y co-ordinate of SLIT i
HIERARCH ESO INS SLIT24 DIMX = 5.126 / Size in x direction of SLIT i
HIERARCH ESO INS SLIT24 DIMY = 0.582 / Size in y direction of SLIT i
HIERARCH ESO INS SLIT25 TYPE = 'RECTANGLE' / Type of SLIT i
HIERARCH ESO INS SLIT25 ID = 128528 / ID of SLIT i
HIERARCH ESO INS SLIT25 OBJ RA = 150.324742 / RA (J2000) of object
HIERARCH ESO INS SLIT25 OBJ DEC = 2.305881 / DEC (J2000) of object
HIERARCH ESO INS SLIT25 X = 59.324 / x co-ordinate of SLIT i
HIERARCH ESO INS SLIT25 Y = 62.007 / y co-ordinate of SLIT i
HIERARCH ESO INS SLIT25 DIMX = 6.676 / Size in x direction of SLIT i
HIERARCH ESO INS SLIT25 DIMY = 0.582 / Size in y direction of SLIT i
HIERARCH ESO INS SLIT26 TYPE = 'RECTANGLE' / Type of SLIT i
HIERARCH ESO INS SLIT26 ID = 128053 / ID of SLIT i
HIERARCH ESO INS SLIT26 OBJ RA = 150.301421 / RA (J2000) of object
HIERARCH ESO INS SLIT26 OBJ DEC = 2.302322 / DEC (J2000) of object
HIERARCH ESO INS SLIT26 X = 66.473 / x co-ordinate of SLIT i
HIERARCH ESO INS SLIT26 Y = 13.246 / y co-ordinate of SLIT i
HIERARCH ESO INS SLIT26 DIMX = 7.152 / Size in x direction of SLIT i
HIERARCH ESO INS SLIT26 DIMY = 0.581 / Size in y direction of SLIT i
HIERARCH ESO INS SLIT27 TYPE = 'RECTANGLE' / Type of SLIT i
HIERARCH ESO INS SLIT27 ID = 128133 / ID of SLIT i
HIERARCH ESO INS SLIT27 OBJ RA = 150.313362 / RA (J2000) of object
HIERARCH ESO INS SLIT27 OBJ DEC = 2.299283 / DEC (J2000) of object
HIERARCH ESO INS SLIT27 X = 73.388 / x co-ordinate of SLIT i
HIERARCH ESO INS SLIT27 Y = 38.213 / y co-ordinate of SLIT i
HIERARCH ESO INS SLIT27 DIMX = 6.199 / Size in x direction of SLIT i
HIERARCH ESO INS SLIT27 DIMY = 0.582 / Size in y direction of SLIT i
HIERARCH ESO INS SLIT28 TYPE = 'RECTANGLE' / Type of SLIT i
HIERARCH ESO INS SLIT28 ID = 127508 / ID of SLIT i
HIERARCH ESO INS SLIT28 OBJ RA = 150.323738 / RA (J2000) of object
HIERARCH ESO INS SLIT28 OBJ DEC = 2.294797 / DEC (J2000) of object
HIERARCH ESO INS SLIT28 X = 81.321 / x co-ordinate of SLIT i
HIERARCH ESO INS SLIT28 Y = 59.917 / y co-ordinate of SLIT i
HIERARCH ESO INS SLIT28 DIMX = 9.182 / Size in x direction of SLIT i
HIERARCH ESO INS SLIT28 DIMY = 0.582 / Size in y direction of SLIT i
HIERARCH ESO INS SLIT29 TYPE = 'RECTANGLE' / Type of SLIT i
HIERARCH ESO INS SLIT29 ID = 127314 / ID of SLIT i
HIERARCH ESO INS SLIT29 OBJ RA = 150.296713 / RA (J2000) of object
HIERARCH ESO INS SLIT29 OBJ DEC = 2.291669 / DEC (J2000) of object
HIERARCH ESO INS SLIT29 X = 89.244 / x co-ordinate of SLIT i
HIERARCH ESO INS SLIT29 Y = 3.402 / y co-ordinate of SLIT i
HIERARCH ESO INS SLIT29 DIMX = 6.2 / Size in x direction of SLIT i
HIERARCH ESO INS SLIT29 DIMY = 0.581 / Size in y direction of SLIT i
HIERARCH ESO INS SLIT30 TYPE = 'RECTANGLE' / Type of SLIT i
HIERARCH ESO INS SLIT30 ID = 127180 / ID of SLIT i
HIERARCH ESO INS SLIT30 OBJ RA = 150.317087 / RA (J2000) of object
HIERARCH ESO INS SLIT30 OBJ DEC = 2.288025 / DEC (J2000) of object
HIERARCH ESO INS SLIT30 X = 96.283 / x co-ordinate of SLIT i
HIERARCH ESO INS SLIT30 Y = 46.016 / y co-ordinate of SLIT i
HIERARCH ESO INS SLIT30 DIMX = 7.394 / Size in x direction of SLIT i
HIERARCH ESO INS SLIT30 DIMY = 0.582 / Size in y direction of SLIT i
HIERARCH ESO INS SLIT31 TYPE = 'RECTANGLE' / Type of SLIT i
HIERARCH ESO INS SLIT31 ID = 127438 / ID of SLIT i
HIERARCH ESO INS SLIT31 OBJ RA = 150.321308 / RA (J2000) of object
HIERARCH ESO INS SLIT31 OBJ DEC = 2.28495 / DEC (J2000) of object
HIERARCH ESO INS SLIT31 X = 103.324 / x co-ordinate of SLIT i
HIERARCH ESO INS SLIT31 Y = 54.842 / y co-ordinate of SLIT i
HIERARCH ESO INS SLIT31 DIMX = 6.203 / Size in x direction of SLIT i
HIERARCH ESO INS SLIT31 DIMY = 0.582 / Size in y direction of SLIT i
HIERARCH ESO INS SLIT32 TYPE = 'RECTANGLE' / Type of SLIT i
HIERARCH ESO INS SLIT32 ID = 126585 / ID of SLIT i
HIERARCH ESO INS SLIT32 OBJ RA = 150.324013 / RA (J2000) of object
HIERARCH ESO INS SLIT32 OBJ DEC = 2.282417 / DEC (J2000) of object
HIERARCH ESO INS SLIT32 X = 109.233 / x co-ordinate of SLIT i
HIERARCH ESO INS SLIT32 Y = 60.508 / y co-ordinate of SLIT i
HIERARCH ESO INS SLIT32 DIMX = 5.13 / Size in x direction of SLIT i
HIERARCH ESO INS SLIT32 DIMY = 0.582 / Size in y direction of SLIT i
HIERARCH ESO INS SLIT33 TYPE = 'RECTANGLE' / Type of SLIT i
HIERARCH ESO INS SLIT33 ID = 126275 / ID of SLIT i
HIERARCH ESO INS SLIT33 OBJ RA = 150.301817 / RA (J2000) of object
HIERARCH ESO INS SLIT33 OBJ DEC = 2.279189 / DEC (J2000) of object
HIERARCH ESO INS SLIT33 X = 117.03 / x co-ordinate of SLIT i
HIERARCH ESO INS SLIT33 Y = 14.079 / y co-ordinate of SLIT i
HIERARCH ESO INS SLIT33 DIMX = 10.02 / Size in x direction of SLIT i
HIERARCH ESO INS SLIT33 DIMY = 0.582 / Size in y direction of SLIT i
HIERARCH ESO INS PIXSCALE = 0.205 / Pixel scale
HIERARCH ESO INS MODE = 'MOS ' / Instrument Observation Mode
HIERARCH ESO INS FILT1 FIX = F / Filter mode degraded
HIERARCH ESO INS FILT1 SIM = F / Device Hardware Simulation
HIERARCH ESO INS FILT1 NAME = 'GG475 ' / Filter name
HIERARCH ESO INS FILT1 ID = 'vm-GG475-1.10' / Filter ESO ID
HIERARCH ESO INS MASK1 FIX = F / Mask mode degraded
HIERARCH ESO INS MASK1 SIM = F / Device Hardware Simulation
HIERARCH ESO INS MASK1 NO = 3 / Mask set number
HIERARCH ESO INS FOCU1 FIX = F / Focusing mode degraded
HIERARCH ESO INS FOCU1 SIM = F / Device Hardware Simulation
HIERARCH ESO INS FOCU1 VALUE = 6976.122982 / Camera lens position(micron)
HIERARCH ESO INS FOCU3 FIX = F / Focusing mode degraded
HIERARCH ESO INS FOCU3 SIM = F / Device Hardware Simulation
HIERARCH ESO INS FOCU3 TEMP = 14.629684 / Temperature(C) for the beam
HIERARCH ESO INS FOCU3 VALUE = 5181.099499 / Camera lens position(micron)
HIERARCH ESO INS FOCU2 FIX = F / Focusing mode degraded
HIERARCH ESO INS FOCU2 SIM = F / Device Hardware Simulation
HIERARCH ESO INS FOCU2 TEMP = 14.841312 / Temperature(C) for the beam
HIERARCH ESO INS FOCU2 VALUE = 6081.203659 / Camera lens position(micron)
HIERARCH ESO INS MSHU1 FIX = F / Mask Shutter mode degraded
HIERARCH ESO INS MSHU1 SIM = T / Device Hardware Simulation
HIERARCH ESO INS MSHU1 MODE = 'OFF ' / Mask Shutter mode
HIERARCH ESO INS MSHU1 POSH = 7.348085 / High Mask Shutters positions (mm)
HIERARCH ESO INS MSHU1 POSL = 7.348085 / Low Mask Shutters position (mm)
HIERARCH ESO INS GRIS1 FIX = F / Grism mode degraded
HIERARCH ESO INS GRIS1 SIM = F / Device Hardware Simulation
HIERARCH ESO INS GRIS1 NAME = 'HR_red ' / Grism name
HIERARCH ESO INS GRIS1 ID = 'vm-HRredHolog-1.1' / Grism ESO ID
HIERARCH ESO INS AFC11 FIX = F / AFC mode degraded
HIERARCH ESO INS AFC11 SIM = F / Device Hardware Simulation
HIERARCH ESO INS AFC12 FIX = F / AFC mode degraded
HIERARCH ESO INS AFC12 SIM = F / Device Hardware Simulation
HIERARCH ESO INS FOCU4 FIX = F / Focusing mode degraded
HIERARCH ESO INS FOCU4 SIM = F / Device Hardware Simulation
HIERARCH ESO INS FOCU4 TEMP = 14.588951 / Temperature(C) for the beam
HIERARCH ESO INS FOCU4 VALUE = 7108.120407 / Camera lens position(micron)
HIERARCH ESO INS LAMP1 FIX = F / Lamp[i] mode degraded
HIERARCH ESO INS LAMP1 SIM = F / Device Hardware Simulation
HIERARCH ESO INS LAMP1 TIME = 0 / Lamp lightening time
HIERARCH ESO INS LAMP1 STATE = 'OFF ' / State for this lamp in each box
HIERARCH ESO INS LAMP1 NAME = 'QTH50 ' / Calibration lamp name
HIERARCH ESO INS LAMP1 ID = 'vm-QTH50-1' / Calib. lamp ESO identification
HIERARCH ESO INS LAMP2 FIX = F / Lamp[i] mode degraded
HIERARCH ESO INS LAMP2 SIM = F / Device Hardware Simulation
HIERARCH ESO INS LAMP2 TIME = 0 / Lamp lightening time
HIERARCH ESO INS LAMP2 STATE = 'OFF ' / State for this lamp in each box
HIERARCH ESO INS LAMP2 NAME = 'QTH10 ' / Calibration lamp name
HIERARCH ESO INS LAMP2 ID = 'vm-QTH10-2' / Calib. lamp ESO identification
HIERARCH ESO INS IFUM1 FIX = F / IFU Mask mode degraded
HIERARCH ESO INS IFUM1 SIM = F / Device Hardware Simulation
HIERARCH ESO INS IFUM1 MODE = 'OFF ' / IFU Mask mode
HIERARCH ESO INS LAMP3 FIX = F / Lamp[i] mode degraded
HIERARCH ESO INS LAMP3 SIM = F / Device Hardware Simulation
HIERARCH ESO INS LAMP3 TIME = 0 / Lamp lightening time
HIERARCH ESO INS LAMP3 STATE = 'OFF ' / State for this lamp in each box
HIERARCH ESO INS LAMP3 NAME = 'He ' / Calibration lamp name
HIERARCH ESO INS LAMP3 ID = 'vm-He-3 ' / Calib. lamp ESO identification
HIERARCH ESO INS IFUM2 FIX = F / IFU Mask mode degraded
HIERARCH ESO INS IFUM2 SIM = F / Device Hardware Simulation
HIERARCH ESO INS IFUM2 MODE = 'OFF ' / IFU Mask mode
HIERARCH ESO INS LAMP4 FIX = F / Lamp[i] mode degraded
HIERARCH ESO INS LAMP4 SIM = F / Device Hardware Simulation
HIERARCH ESO INS LAMP4 TIME = 0 / Lamp lightening time
HIERARCH ESO INS LAMP4 STATE = 'OFF ' / State for this lamp in each box
HIERARCH ESO INS LAMP4 NAME = 'Ne ' / Calibration lamp name
HIERARCH ESO INS LAMP4 ID = 'vm-Ne-4 ' / Calib. lamp ESO identification
HIERARCH ESO INS LAMP5 FIX = F / Lamp[i] mode degraded
HIERARCH ESO INS LAMP5 SIM = F / Device Hardware Simulation
HIERARCH ESO INS LAMP5 TIME = 0 / Lamp lightening time
HIERARCH ESO INS LAMP5 STATE = 'OFF ' / State for this lamp in each box
HIERARCH ESO INS LAMP5 NAME = 'Ar ' / Calibration lamp name
HIERARCH ESO INS LAMP5 ID = 'vm-Ar-5 ' / Calib. lamp ESO identification
HIERARCH ESO INS LAMP6 FIX = F / Lamp[i] mode degraded
HIERARCH ESO INS LAMP6 SIM = F / Device Hardware Simulation
HIERARCH ESO INS LAMP6 TIME = 0 / Lamp lightening time
HIERARCH ESO INS LAMP6 STATE = 'OFF ' / State for this lamp in each box
HIERARCH ESO INS LAMP6 NAME = 'Afc ' / Calibration lamp name
HIERARCH ESO INS LAMP6 ID = 'vm-Afc-6' / Calib. lamp ESO identification
HIERARCH ESO INS IFUE FIX = F / IFU Elongator mode degraded
HIERARCH ESO INS IFUE SIM = F / Device Hardware Simulation
HIERARCH ESO INS IFUE MAG = '1:1 ' / IFU Magnification 0.33(1:2) or 0.6
HIERARCH ESO INS IFUS FIX = F / IFU Shutter mode degraded
HIERARCH ESO INS IFUS SIM = F / Device Hardware Simulation
HIERARCH ESO INS IFUS MODE = 'OFF ' / IFU Shutter CLOSED(ON) or OPEN(OFF
HIERARCH ESO DET CHIP1 INDEX = 1 / Chip index
HIERARCH ESO DET CHIP1 ID = 'BRIAN ' / Detector chip identification
HIERARCH ESO DET CHIP1 NAME = 'EEV CCD-44-82' / Detector chip name
HIERARCH ESO DET CHIP1 DATE = '2000-08-30' / Date of installation [YYYY-MM-DD]
HIERARCH ESO DET CHIP1 X = 1 / X location in array
HIERARCH ESO DET CHIP1 Y = 1 / Y location in array
HIERARCH ESO DET CHIP1 NX = 2048 / # of pixels along X
HIERARCH ESO DET CHIP1 NY = 4096 / # of pixels along Y
HIERARCH ESO DET CHIP1 PSZX = 15. / Size of pixel in X
HIERARCH ESO DET CHIP1 PSZY = 15. / Size of pixel in Y
HIERARCH ESO DET CHIP1 XGAP = 0. / Gap between chips along x
HIERARCH ESO DET CHIP1 YGAP = 0. / Gap between chips along y
HIERARCH ESO DET OUT1 INDEX = 1 / Output index
HIERARCH ESO DET OUT1 ID = 'L ' / Output ID as from manufacturer
HIERARCH ESO DET OUT1 NAME = 'L ' / Description of output
HIERARCH ESO DET OUT1 CHIP = 1 / index of chip it belongs to
HIERARCH ESO DET OUT1 X = 1 / X location of output
HIERARCH ESO DET OUT1 Y = 1 / Y location of output
HIERARCH ESO DET OUT1 NX = 2048 / valid pixels along X
HIERARCH ESO DET OUT1 NY = 4096 / valid pixels along Y
HIERARCH ESO DET OUT1 CONAD = 0.55 / Conversion from ADUs to electrons
HIERARCH ESO DET OUT1 RON = 3.21 / [e-] Readout noise per output (ele
HIERARCH ESO DET OUT1 GAIN = 1.82 / Conversion from electrons to ADU
HIERARCH ESO DET ID = 'CCD FIERA - Rev: 238334' / Detector system Id
HIERARCH ESO DET NAME = 'Vimosb - vimosb' / Name of detector system
HIERARCH ESO DET DATE = '2010-07-01' / Installation date
HIERARCH ESO DET DID = 'ESO-VLT-DIC.CCDDCS,ESO-VLT-DIC.FCDDCS' / Diction
HIERARCH ESO DET BITS = 16 / Bits per pixel readout
HIERARCH ESO DET RA = 0. / Apparent 00:00:00.0 RA at start
HIERARCH ESO DET DEC = 0. / Apparent 00:00:00.0 DEC at start
HIERARCH ESO DET CHIPS = 1 / # of chips in detector array
HIERARCH ESO DET OUTPUTS = 1 / # of outputs
HIERARCH ESO DET OUTREF = 0 / reference output
HIERARCH ESO DET WINDOWS = 1 / # of windows readout
HIERARCH ESO DET SOFW MODE = 'Normal ' / CCD sw operational mode
HIERARCH ESO DET EXP NO = 42197 / Unique exposure ID number
HIERARCH ESO DET EXP TYPE = 'Normal ' / Exposure type
HIERARCH ESO DET EXP RDTTIME = 30.939 / image readout time
HIERARCH ESO DET EXP XFERTIM = 44.981 / image transfer time
HIERARCH ESO DET WIN1 ST = T / If T, window enabled
HIERARCH ESO DET WIN1 STRX = 1 / Lower left pixel in X
HIERARCH ESO DET WIN1 STRY = 1 / Lower left pixel in Y
HIERARCH ESO DET WIN1 NX = 2148 / # of pixels along X
HIERARCH ESO DET WIN1 NY = 4096 / # of pixels along Y
HIERARCH ESO DET WIN1 BINX = 1 / Binning factor along X
HIERARCH ESO DET WIN1 BINY = 1 / Binning factor along Y
HIERARCH ESO DET WIN1 NDIT = 1 / # of subintegrations
HIERARCH ESO DET WIN1 UIT1 = 1200. / user defined subintegration time
HIERARCH ESO DET WIN1 DIT1 = 1199.997383 / actual subintegration time
HIERARCH ESO DET WIN1 DKTM = 1200.0992 / Dark current time
HIERARCH ESO DET READ MODE = 'normal ' / Readout method
HIERARCH ESO DET READ SPEED = 'medium ' / Readout speed
HIERARCH ESO DET READ CLOCK = '225kHz,1port,HG' / Readout clock pattern used
HIERARCH ESO DET READ NFRAM = 1 / Number of readouts buffered in sin
HIERARCH ESO DET FRAM ID = 1 / Image sequencial number
HIERARCH ESO DET FRAM TYPE = 'Normal ' / Type of frame
HIERARCH ESO DET SHUT TYPE = 'seso ' / type of shutter
HIERARCH ESO DET SHUT ID = 'VIMOS shutter' / Shutter unique identifier
HIERARCH ESO DET SHUT TMOPEN = 0.074 / Time taken to open shutter
HIERARCH ESO DET SHUT TMCLOS = 0.069 / Time taken to close shutter
HIERARCH ESO DET TELE INT = 900. / Interval between two successive te
HIERARCH ESO DET TELE NO = 7 / # of sources active
HIERARCH ESO DET TLM1 NAME = 'CCD Cold Plate' / Description of telemetry param
HIERARCH ESO DET TLM1 ID = 'CCD_B1_T1' / ID of telemetry sensor
HIERARCH ESO DET TLM1 START = 140.1 / Telemetry value at read start
HIERARCH ESO DET TLM1 END = 139.9 / Telemetry value at read completion
HIERARCH ESO DET TLM2 NAME = 'CCD Cold Plate2' / Description of telemetry para
HIERARCH ESO DET TLM2 ID = 'CCD_B1_T2' / ID of telemetry sensor
HIERARCH ESO DET TLM2 START = 151.6 / Telemetry value at read start
HIERARCH ESO DET TLM2 END = 151.4 / Telemetry value at read completion
HIERARCH ESO DET TLM3 NAME = 'CCD Cold Plate' / Description of telemetry param
HIERARCH ESO DET TLM3 ID = 'CCD_B4_T1' / ID of telemetry sensor
HIERARCH ESO DET TLM3 START = 140. / Telemetry value at read start
HIERARCH ESO DET TLM3 END = 140. / Telemetry value at read completion
HIERARCH ESO DET TLM4 NAME = 'CCD Cold Plate2' / Description of telemetry para
HIERARCH ESO DET TLM4 ID = 'CCD_B4_T2' / ID of telemetry sensor
HIERARCH ESO DET TLM4 START = 140.6 / Telemetry value at read start
HIERARCH ESO DET TLM4 END = 140.6 / Telemetry value at read completion
HIERARCH ESO DET TLM5 NAME = 'FBOX ' / Description of telemetry param.
HIERARCH ESO DET TLM5 ID = 'FBOX ' / ID of telemetry sensor
HIERARCH ESO DET TLM5 START = 288.8 / Telemetry value at read start
HIERARCH ESO DET TLM5 END = 288.7 / Telemetry value at read completion
HIERARCH ESO DET TLM6 NAME = 'Vaccum_B1' / Description of telemetry param.
HIERARCH ESO DET TLM6 ID = 'Vaccum_B1' / ID of telemetry sensor
HIERARCH ESO DET TLM6 START = 0. / Telemetry value at read start
HIERARCH ESO DET TLM6 END = 0. / Telemetry value at read completion
HIERARCH ESO DET TLM7 NAME = 'Vaccum_B4' / Description of telemetry param.
HIERARCH ESO DET TLM7 ID = 'Vaccum_B4' / ID of telemetry sensor
HIERARCH ESO DET TLM7 START = 0. / Telemetry value at read start
HIERARCH ESO DET TLM7 END = 0. / Telemetry value at read completion
HIERARCH ESO PRO EXPTTOT = 4799.988
HIERARCH ESO PRO ANCESTOR = 'VIMOS.2015-01-18T04:03:48.110.fits'
HIERARCH ESO PRO DID = 'PRO-1.15' / Data dictionary for PRO
HIERARCH ESO PRO CATG = 'MOS_SCIENCE_SKY_EXTRACTED' / Category of pipeline produ
HIERARCH ESO PRO TYPE = 'REDUCED ' / Product type
HIERARCH ESO PRO TECH = 'MOS ' / Observation technique
HIERARCH ESO PRO SCIENCE = T / Scientific product if T
HIERARCH ESO PRO REC1 ID = 'vmmosscience' / Pipeline recipe (unique) identifier
HIERARCH ESO PRO REC1 DRS ID = 'cpl-6.5.1' / Data Reduction System identifier
HIERARCH ESO PRO REC1 PIPE ID = 'vimos-2.9.15' / Pipeline (unique) identifier
HIERARCH ESO PRO REC1 RAW1 NAME = 'VIMOS.2015-01-18T04:03:48.110.fits' / File na
HIERARCH ESO PRO REC1 RAW1 CATG = 'MOS_SCIENCE' / Category of raw frame
HIERARCH ESO PRO REC1 RAW2 NAME = 'VIMOS.2015-01-18T04:24:43.107.fits' / File na
HIERARCH ESO PRO REC1 RAW2 CATG = 'MOS_SCIENCE' / Category of raw frame
HIERARCH ESO PRO REC1 RAW3 NAME = 'VIMOS.2015-01-18T04:45:38.102.fits' / File na
HIERARCH ESO PRO REC1 RAW3 CATG = 'MOS_SCIENCE' / Category of raw frame
HIERARCH ESO PRO REC1 RAW4 NAME = 'VIMOS.2015-01-18T05:06:33.097.fits' / File na
HIERARCH ESO PRO REC1 RAW4 CATG = 'MOS_SCIENCE' / Category of raw frame
HIERARCH ESO PRO DATANCOM = 4 / Number of combined frames
HIERARCH ESO PRO REC1 CAL1 NAME = 'M.VIMOS.2010-08-19T16:16:17.563.fits' / File
HIERARCH ESO PRO REC1 CAL1 CATG = 'CONFIG_TABLE' / Category of calibration frame
HIERARCH ESO PRO REC1 CAL1 DATAMD5 = '827358dea0214d1587a3f99820ec5810' / MD5 si
HIERARCH ESO PRO REC1 CAL2 NAME = 'master_bias.fits' / File name of calibration
HIERARCH ESO PRO REC1 CAL2 CATG = 'MASTER_BIAS' / Category of calibration frame
HIERARCH ESO PRO REC1 CAL2 DATAMD5 = 'e61a66abf72ac06c6b41c8c3770404e3' / MD5 si
HIERARCH ESO PRO REC1 CAL3 NAME = 'mos_curv_coeff.fits' / File name of calibrati
HIERARCH ESO PRO REC1 CAL3 CATG = 'MOS_CURV_COEFF' / Category of calibration fra
HIERARCH ESO PRO REC1 CAL3 DATAMD5 = '8c4b8da9b95016a47162e7a44741b6e9' / MD5 si
HIERARCH ESO PRO REC1 CAL4 NAME = 'mos_disp_coeff.fits' / File name of calibrati
HIERARCH ESO PRO REC1 CAL4 CATG = 'MOS_DISP_COEFF' / Category of calibration fra
HIERARCH ESO PRO REC1 CAL4 DATAMD5 = '1c1a4eb0e8edb0d621c99d716b0c63ae' / MD5 si
HIERARCH ESO PRO REC1 CAL5 NAME = 'mos_master_screen_flat.fits' / File name of c
HIERARCH ESO PRO REC1 CAL5 CATG = 'MOS_MASTER_SCREEN_FLAT' / Category of calibra
HIERARCH ESO PRO REC1 CAL5 DATAMD5 = '0f2d03e3af5e30f7485a0a300f70b02f' / MD5 si
HIERARCH ESO PRO REC1 CAL6 NAME = 'mos_slit_location.fits' / File name of calibr
HIERARCH ESO PRO REC1 CAL6 CATG = 'MOS_SLIT_LOCATION' / Category of calibration
HIERARCH ESO PRO REC1 CAL6 DATAMD5 = 'f53c43722c662a5763c5b94db9b2468e' / MD5 si
HIERARCH ESO PRO REC1 PARAM1 NAME = 'dispersion' / Resampling step (Angstrom/pix
HIERARCH ESO PRO REC1 PARAM1 VALUE = '0.6 ' / Default: 0
HIERARCH ESO PRO REC1 PARAM2 NAME = 'skyalign' / Polynomial order for sky lines
HIERARCH ESO PRO REC1 PARAM2 VALUE = '0 ' / Default: 0
HIERARCH ESO PRO REC1 PARAM3 NAME = 'wcolumn ' / Name of sky line catalog table
HIERARCH ESO PRO REC1 PARAM3 VALUE = 'WLEN ' / Default: 'WLEN'
HIERARCH ESO PRO REC1 PARAM4 NAME = 'startwavelength' / Start wavelength in spec
HIERARCH ESO PRO REC1 PARAM4 VALUE = '5800 ' / Default: 0
HIERARCH ESO PRO REC1 PARAM5 NAME = 'endwavelength' / End wavelength in spectral
HIERARCH ESO PRO REC1 PARAM5 VALUE = '9500 ' / Default: 0
HIERARCH ESO PRO REC1 PARAM6 NAME = 'reference' / Reference wavelength for calib
HIERARCH ESO PRO REC1 PARAM6 VALUE = '7948.18 ' / Default: 0
HIERARCH ESO PRO REC1 PARAM7 NAME = 'flux ' / Apply flux conservation
HIERARCH ESO PRO REC1 PARAM7 VALUE = 'true ' / Default: true
HIERARCH ESO PRO REC1 PARAM8 NAME = 'flatfield' / Apply flat field
HIERARCH ESO PRO REC1 PARAM8 VALUE = 'true ' / Default: true
HIERARCH ESO PRO REC1 PARAM9 NAME = 'skyglobal' / Subtract global sky spectrum f
HIERARCH ESO PRO REC1 PARAM9 VALUE = 'false ' / Default: false
HIERARCH ESO PRO REC1 PARAM10 NAME = 'skymedian' / Sky subtraction from extracte
HIERARCH ESO PRO REC1 PARAM10 VALUE = 'false ' / Default: false
HIERARCH ESO PRO REC1 PARAM11 NAME = 'skylocal' / Sky subtraction from CCD slit
HIERARCH ESO PRO REC1 PARAM11 VALUE = 'true ' / Default: true
HIERARCH ESO PRO REC1 PARAM12 NAME = 'cosmics ' / Eliminate cosmic rays hits (on
HIERARCH ESO PRO REC1 PARAM12 VALUE = 'true ' / Default: true
HIERARCH ESO PRO REC1 PARAM13 NAME = 'slit_margin' / Number of pixels to exclude
HIERARCH ESO PRO REC1 PARAM13 VALUE = '3 ' / Default: 3
HIERARCH ESO PRO REC1 PARAM14 NAME = 'ext_radius' / Maximum extraction radius fo
HIERARCH ESO PRO REC1 PARAM14 VALUE = '6 ' / Default: 6
HIERARCH ESO PRO REC1 PARAM15 NAME = 'cont_radius' / Minimum distance at which t
HIERARCH ESO PRO REC1 PARAM15 VALUE = '0 ' / Default: 0
HIERARCH ESO PRO REC1 PARAM16 NAME = 'ext_mode' / Object extraction method: 0 =
HIERARCH ESO PRO REC1 PARAM16 VALUE = '1 ' / Default: 1
HIERARCH ESO PRO REC1 PARAM17 NAME = 'detection' / Object detection threshold (A
HIERARCH ESO PRO REC1 PARAM17 VALUE = '2 ' / Default: 2
HIERARCH ESO PRO REC1 PARAM18 NAME = 'time_normalise' / Normalise output spectra
HIERARCH ESO PRO REC1 PARAM18 VALUE = 'true ' / Default: true
HIERARCH ESO PRO REC1 PARAM19 NAME = 'anyframe' / Look for a standard star in an
HIERARCH ESO PRO REC1 PARAM19 VALUE = 'false ' / Default: false
HIERARCH ESO PRO REC1 PARAM20 NAME = 'response' / Order of polynomial modeling t
HIERARCH ESO PRO REC1 PARAM20 VALUE = '5 ' / Default: 5
HIERARCH ESO PRO REC1 PARAM21 NAME = 'alignment' / Type of alignment of dithered
HIERARCH ESO PRO REC1 PARAM21 VALUE = 'integer ' / Default: 'integer'
HIERARCH ESO PRO REC1 PARAM22 NAME = 'stack_method' / Frames combination method
HIERARCH ESO PRO REC1 PARAM22 VALUE = 'average ' / Default: 'average'
HIERARCH ESO PRO REC1 PARAM23 NAME = 'minrejection' / Number of lowest values to
HIERARCH ESO PRO REC1 PARAM23 VALUE = '1 ' / Default: 1
HIERARCH ESO PRO REC1 PARAM24 NAME = 'maxrejection' / Number of highest values t
HIERARCH ESO PRO REC1 PARAM24 VALUE = '1 ' / Default: 1
HIERARCH ESO PRO REC1 PARAM25 NAME = 'klow ' / Low threshold in ksigma method
HIERARCH ESO PRO REC1 PARAM25 VALUE = '3 ' / Default: 3
HIERARCH ESO PRO REC1 PARAM26 NAME = 'khigh ' / High threshold in ksigma metho
HIERARCH ESO PRO REC1 PARAM26 VALUE = '3 ' / Default: 3
HIERARCH ESO PRO REC1 PARAM27 NAME = 'kiter ' / Max number of iterations in ks
HIERARCH ESO PRO REC1 PARAM27 VALUE = '999 ' / Default: 999
HIERARCH ESO PRO REC1 PARAM28 NAME = 'dither ' / Align dithered frames before s
HIERARCH ESO PRO REC1 PARAM28 VALUE = 'true ' / Default: true
HIERARCH ESO PRO REC1 PARAM29 NAME = 'compute ' / Compute offsets of dithered im
HIERARCH ESO PRO REC1 PARAM29 VALUE = 'false ' / Default: false
HIERARCH ESO PRO REC1 PARAM30 NAME = 'fringing' / Apply fringing correction (onl
HIERARCH ESO PRO REC1 PARAM30 VALUE = 'true ' / Default: true
HIERARCH ESO PRO REC1 PARAM31 NAME = 'offset ' / Minimum required offset betwee
HIERARCH ESO PRO REC1 PARAM31 VALUE = '3 ' / Default: 3
HIERARCH ESO PRO REC1 PARAM32 NAME = 'qc ' / Compute QC1 parameters
HIERARCH ESO PRO REC1 PARAM32 VALUE = 'true ' / Default: true
HIERARCH ESO ADA ABSROT START = 21.56262 / Abs rot angle at exp start
HIERARCH ESO ADA POSANG = 90. / Position angle at start
HIERARCH ESO ADA GUID STATUS = 'ON ' / Status of autoguider
HIERARCH ESO ADA GUID RA = 150.241537 / 10:00:57.9 Guide star RA J2000
HIERARCH ESO ADA GUID DEC = 2.59418 / 02:35:39.0 Guide star DEC J2000
HIERARCH ESO ADA ABSROT PPOS = 'NEG ' / sign of probe position
HIERARCH ESO ADA ABSROT END = 20.56639 / Abs rot angle at exp end
HIERARCH ESO OCS CON QUAD = 1 / Quadrant Number
HIERARCH ESO OCS CMF FILE1 NAME = 'MOS_sky2ccd_1.cmf' / Calibration matrix file
HIERARCH ESO OCS CMF FILE1 CRTEDATE = '2012-05-18T14:37:53' / Calibration matrix
HIERARCH ESO OCS CMF FILE2 NAME = 'MOS_wavecal_HR_red_1.cmf' / Calibration matri
HIERARCH ESO OCS CMF FILE2 CRTEDATE = '2005-10-20T17:18:57' / Calibration matrix
HIERARCH ESO OCS COMP ID = '226602 2012-03-18 17:49:45Z' / OS Software Versi
HIERARCH ESO OCS DID = 'ESO-VLT-DIC.VIMOS_OS-0.2' / Data dictionary for
HISTORY FTU-2_5_2/2015-01-18/REMOVE: XTENSION, "IMAGE"
HISTORY FTU-2_5_2/2015-01-18/REMOVE: EXTNAME, "BRIAN"
HISTORY FTU-2_5_2/2015-01-18/REMOVE: ORIGIN, "VIRMOS OS Software"
HISTORY FTU-2_5_2/2015-01-18/REMOVE: CDELT1, 1.00000000
HISTORY FTU-2_5_2/2015-01-18/REMOVE: CDELT2, 1.00000000
HISTORY FTU-2_5_2/2015-01-18/CHANGE: DET.CHIPS, 1
HISTORY FTU-2_5_2/2015-01-18/CHANGE: DET.OUTPUTS, 1
HISTORY FTU-2_5_2/2015-01-18/CHANGE: DET.WIN1.NX, 2148
COMMENT FTU-2_5_2/2015-01-18T04:24:44/vimos.ftt
CHECKSUM= 'NMTOQMTNNMTNNMTN' / HDU checksum updated 2015-01-26T12:24:13
DATASUM = '338047765' / data unit checksum updated 2015-01-26T12:24:13
If i want to do it in Pandas.
flux = hdu1d[0].data.byteswap().newbyteorder()
wht = hdu1dwht[0].data.byteswap().newbyteorder()
unc = 1./ np.sqrt(wht)
wave = np.arange(flux.shape[0])*hdu1d[0].header['CD1_1'] + hdu1d[0].header['CRVAL1']
##for certain functions, I need to cut the spectrum where the weight is 0.
d = {'wavelength':wave, 'flux':flux, 'weight':wht, 'uncertainty':unc}
dataspec = pd.DataFrame(data=d)
##define subset where wht>0
dataspec_sub = dataspec[dataspec['weight'] > 0.].reset_index(drop=True)
dataspec_sub.head()
| wavelength | flux | weight | uncertainty | |
|---|---|---|---|---|
| 0 | 6229.3 | 14.757169 | 0.207031 | 2.197769 |
| 1 | 6229.9 | 26.817886 | 0.148122 | 2.598306 |
| 2 | 6230.5 | 23.955254 | 0.142191 | 2.651945 |
| 3 | 6231.1 | 22.239902 | 0.141403 | 2.659323 |
| 4 | 6231.7 | 22.505369 | 0.136912 | 2.702580 |
If I want to do it in astropy Tables.
flux = hdu1d[0].data
wht = hdu1dwht[0].data
unc = 1./ np.sqrt(wht)
wave = np.arange(flux.shape[0])*hdu1d[0].header['CD1_1'] + hdu1d[0].header['CRVAL1']
spec_unit = u.Unit('10^-19 erg s^-1 cm^-2 angstrom^-1')
dataspec = QTable([wave*u.angstrom, flux*spec_unit, wht, unc*spec_unit],
names=('wavelength','flux','weight','uncertainty'))
dataspec_sub = dataspec[dataspec['weight']>0.]
dataspec_sub
QTable length=4059
| wavelength | flux | weight | uncertainty |
|---|---|---|---|
| Angstrom | 1e-19 erg / (Angstrom s cm2) | 1e-19 erg / (Angstrom s cm2) | |
| float64 | float32 | float32 | float32 |
| 6229.3 | 14.757168769836426 | 0.20703126 | 2.1977689266204834 |
| 6229.900000000001 | 26.817886352539062 | 0.14812198 | 2.5983057022094727 |
| 6230.5 | 23.95525360107422 | 0.14219064 | 2.651945114135742 |
| 6231.1 | 22.23990249633789 | 0.14140277 | 2.659322738647461 |
| 6231.7 | 22.505369186401367 | 0.13691239 | 2.702580213546753 |
| 6232.3 | 21.266435623168945 | 0.12861502 | 2.788393974304199 |
| 6232.900000000001 | 21.235198974609375 | 0.11325585 | 2.9714584350585938 |
| 6233.5 | 24.18277359008789 | 0.096821204 | 3.2137696743011475 |
| 6234.1 | 32.75020980834961 | 0.085573986 | 3.4184489250183105 |
| ... | ... | ... | ... |
| 8677.9 | 46.554779052734375 | 0.08704492 | 3.3894426822662354 |
| 8678.5 | 45.3433837890625 | 0.08504387 | 3.429086923599243 |
| 8679.1 | 46.19153594970703 | 0.06836141 | 3.824674606323242 |
| 8679.7 | 49.632057189941406 | 0.058549482 | 4.132743835449219 |
| 8680.3 | 40.599159240722656 | 0.04911178 | 4.51239538192749 |
| 8680.9 | 46.05984115600586 | 0.0454888 | 4.6886491775512695 |
| 8681.5 | 53.85580825805664 | 0.049859755 | 4.478421211242676 |
| 8682.1 | 51.271400451660156 | 0.058481682 | 4.135138511657715 |
| 8682.7 | 51.61949920654297 | 0.069049306 | 3.805575370788574 |
| 8683.3 | 51.20613098144531 | 0.08998948 | 3.3335282802581787 |
plt.figure(figsize=[10,6])
plt.fill_between(dataspec_sub['wavelength'],
dataspec_sub['flux']+dataspec_sub['uncertainty'],
dataspec_sub['flux']-dataspec_sub['uncertainty'],
color='gray',label="uncertainty")
plt.plot(dataspec_sub['wavelength'],dataspec_sub['flux'], label="data")
plt.xlabel("wavelength ({:latex})".format(dataspec_sub['wavelength'].unit))
plt.ylabel("flux ({:latex})".format(dataspec_sub['flux'].unit))
plt.title("Observed spectrum")
plt.legend()
plt.show()
Go with specutils#
#write Spectrum1D object
spec1d = Spectrum1D(spectral_axis=dataspec_sub['wavelength'],
flux=dataspec_sub['flux'],
uncertainty=StdDevUncertainty(dataspec_sub['uncertainty']))
Developer note#
For supported datasets (like final JWST data products), this will be as simple as:
spec1d = Spectrum1d.read('datafile.fits')
Developer note#
Implemented but not yet released: snr_threshold, which will allow cutting the spectrum using that function.
Smooth to better inspect the features#
Developer note#
The uncertainty is not carried over, but would be useful. Same comment on the interactive tool as before: it would be very useful to be able to zoom, pan, hoover, etc. on the spectrum.
spec1d_gsmooth = gaussian_smooth(spec1d, stddev=5)
plt.figure(figsize=[10,6])
plt.plot(spec1d_gsmooth.spectral_axis,spec1d_gsmooth.flux)
plt.xlabel("wavelength ({:latex})".format(spec1d_gsmooth.spectral_axis.unit))
plt.ylabel("flux ({:latex})".format(spec1d_gsmooth.flux.unit))
plt.title("Smoothed observed spectrum")
plt.show()
Back to the non-smoothed spectrum to find lines#
Documentation says I need a continuum subtracted spectrum.
So fit continuum first#
cont_spec1d = fit_generic_continuum(spec1d)
cont_fit = cont_spec1d(spec1d.spectral_axis)
WARNING: Model is linear in parameters; consider using linear fitting methods. [astropy.modeling.fitting]
plt.figure(figsize=[10,6])
plt.plot(spec1d.spectral_axis, spec1d.flux, label="data")
plt.plot(spec1d.spectral_axis, cont_fit, label="modeled continuum")
plt.xlabel("wavelength ({:latex})".format(spec1d.spectral_axis.unit))
plt.ylabel("flux ({:latex})".format(spec1d.flux.unit))
plt.legend()
plt.title("Observed spectrum and fitted continuum")
plt.show()
plt.figure(figsize=[10,6])
plt.plot(spec1d.spectral_axis, spec1d.uncertainty.array, label="data")
plt.xlabel("wavelength ({:latex})".format(spec1d.spectral_axis.unit))
plt.ylabel("uncertainty ({:latex})".format(spec1d.uncertainty.unit))
plt.legend()
plt.title("Uncertianty of observed spectrum")
plt.show()
Creating the continuum-subtracted spectrum#
Specutils will figure out what to do with the uncertainty!
spec1d_sub = spec1d - cont_fit
spec1d_sub
<Spectrum1D(flux=<Quantity [-9.11481202, 2.92418963, 0.03985127, ..., 2.46770635,
2.81985914, 2.41054724] 1e-19 erg / (Angstrom s cm2)>, spectral_axis=<SpectralAxis
(observer to target:
radial_velocity=0.0 km / s
redshift=0.0)
[6229.3, 6229.9, 6230.5, ..., 8682.1, 8682.7, 8683.3] Angstrom>, uncertainty=StdDevUncertainty([2.197769 , 2.5983057, 2.651945 , ..., 4.1351385,
3.8055754, 3.3335283]))>
plt.figure(figsize=[10,6])
plt.plot(spec1d_sub.spectral_axis, spec1d_sub.flux, label="data")
plt.xlabel("wavelength ({:latex})".format(spec1d_sub.spectral_axis.unit))
plt.ylabel("flux ({:latex})".format(spec1d_sub.flux.unit))
plt.legend()
plt.title("Continuum-subracted spectrum")
plt.show()
plt.figure(figsize=[10,6])
plt.plot(spec1d_sub.spectral_axis,spec1d_sub.uncertainty.array, label="data")
plt.xlabel("wavelength ({:latex})".format(spec1d_sub.spectral_axis.unit))
plt.ylabel("uncertainty ({:latex})".format(spec1d_sub.uncertainty.unit))
plt.legend()
plt.title("Uncertainty of continuum-subracted spectrum")
plt.show()
Now look for the lines#
lines = find_lines_derivative(spec1d_sub, flux_threshold=50)
lines
QTable length=4
| line_center | line_type | line_center_index |
|---|---|---|
| Angstrom | ||
| float64 | str8 | int64 |
| 6549.1 | emission | 528 |
| 6553.900000000001 | emission | 536 |
| 6558.7 | emission | 544 |
| 8550.7 | emission | 3837 |
plt.figure(figsize=[10,6])
plt.plot(spec1d_sub.spectral_axis,spec1d_sub.flux,label="data")
plt.axvline(lines['line_center'][0].value, color="red", alpha=0.5, label='emission/absorption lines')
for line in lines:
plt.axvline(line['line_center'].value, color='red',alpha=0.5)
plt.xlabel("wavelength ({:latex})".format(spec1d_sub.spectral_axis.unit))
plt.ylabel("flux ({:latex})".format(spec1d.flux.unit))
plt.legend()
plt.title("Continuum-subtracted spectrum and marked lines using find_lines_derivative")
plt.show()
This works for cases where you understand the thresholds well, but doesn’t automate as well with noisy spectra.
Works better with find_lines_threshold#
lines = find_lines_threshold(spec1d_sub, noise_factor=6)
lines
QTable length=18
| line_center | line_type | line_center_index |
|---|---|---|
| Angstrom | ||
| float64 | str10 | int64 |
| 6554.5 | emission | 537 |
| 7478.5 | emission | 2062 |
| 7488.1 | emission | 2072 |
| 8546.5 | emission | 3830 |
| 8551.3 | emission | 3838 |
| 6635.5 | absorption | 667 |
| 6671.5 | absorption | 727 |
| 6681.1 | absorption | 743 |
| 6739.9 | absorption | 841 |
| 6746.5 | absorption | 852 |
| 6913.3 | absorption | 1124 |
| 6916.9 | absorption | 1130 |
| 6975.7 | absorption | 1228 |
| 6979.9 | absorption | 1235 |
| 7205.5 | absorption | 1610 |
| 7217.5 | absorption | 1630 |
| 8079.700000000001 | absorption | 3055 |
| 8541.1 | absorption | 3821 |
Plot lines on the spectrum.
plt.figure(figsize=[10,6])
plt.plot(spec1d_sub.spectral_axis,spec1d_sub.flux,label="data")
plt.axvline(lines['line_center'][0].value, color="red", alpha=0.5, label='emission/absorption lines')
for line in lines:
plt.axvline(line['line_center'].value, color='red', alpha=0.5)
plt.xlabel("wavelength ({:latex})".format(spec1d_sub.spectral_axis.unit))
plt.ylabel("flux ({:latex})".format(spec1d_sub.flux.unit))
plt.legend()
plt.title("Continuum-subtracted spectrum and marked lines using find_lines_threshold")
plt.show()
Developer note#
It would be useful to have a tool to cycle through the lines, show a zoom of the spectrum, and inspect how good the line identification is. For now I do it by hand on a single line.
plt.figure(figsize=[10,6])
plt.plot(spec1d_sub.spectral_axis,spec1d_sub.flux, label="data")
plt.scatter(spec1d_sub.spectral_axis,spec1d_sub.flux, label=None)
plt.axvline(lines['line_center'][0].value, color="red", alpha=0.5, label='[OII]')
for line in lines:
plt.axvline(line['line_center'].value, alpha=0.5, color='red')
plt.xlim(6500,6600)
plt.xlabel("wavelength ({:latex})".format(spec1d_sub.spectral_axis.unit))
plt.ylabel("flux ({:latex})".format(spec1d_sub.flux.unit))
plt.legend()
plt.title("Continuum-subtracted spectrum zoomed on [OII]")
plt.show()
Measure line centroids and fluxes#
These too need spectra continuum subtracted.
#example with just one line
centroid(spec1d_sub, SpectralRegion(6540*u.AA, 6580*u.AA))
\[6554.415 \; \mathrm{\mathring{A}}\]
sline = centroid(spec1d_sub, SpectralRegion(6540*u.AA, 6580*u.AA))
plt.figure(figsize=[10,6])
plt.plot(spec1d_sub.spectral_axis,spec1d_sub.flux, label="data")
plt.scatter(spec1d_sub.spectral_axis,spec1d_sub.flux, label=None)
plt.axvline(sline.value, color='red', label="[OII]")
plt.axhline(0,color='black', label='flux = 0')
plt.xlim(6500,6600)
plt.xlabel("wavelength ({:latex})".format(spec1d_sub.spectral_axis.unit))
plt.ylabel("flux ({:latex})".format(spec1d_sub.flux.unit))
plt.legend()
plt.title("Continuum-subtracted spectrum zoomed on [OII]")
plt.show()
line_flux(spec1d_sub, SpectralRegion(6540*u.AA, 6570*u.AA))
\[965.51743 \; \mathrm{1 \times 10^{-19}\,\frac{erg}{s\,cm^{2}}}\]
Fit the line with a Gaussian#
Developer note#
Fitting lines with Gaussians is so common that it might make sense to have a one-line to iterate this over the list of lines, with sensible initialization of parameters and fit ranges for each line so that the fits generally work.
Also, the interactive tool here could allow one to select the continuum region and position of the line by clicking on the spectrum.
g_init = models.Gaussian1D(amplitude= 3 * 1e-19 * u.erg / u.s / u.cm**2 / u.AA, mean=6554*u.AA, stddev=2.*u.AA)
g_fit = fit_lines(spec1d_sub, g_init)
spec1d_fit = g_fit(spec1d_sub.wavelength)
g_fit
<Gaussian1D(amplitude=116.3316537 1e-19 erg / (Angstrom s cm2), mean=6554.93917566 Angstrom, stddev=3.71890257 Angstrom)>
#calculate the velocity dispertion from the stddev
vel = ((3.71890256/6554.415) * const.c.to('km/s').value)*u.km/u.s
print(vel)
170.0989240877931 km / s
plt.figure(figsize=[10,6])
plt.plot(spec1d_sub.wavelength,spec1d_sub.flux,label='data')
plt.plot(spec1d_sub.wavelength,spec1d_fit,color='darkorange',label='Gaussian fit')
plt.xlim(6500,6600)
plt.xlabel("wavelength ({:latex})".format(spec1d_sub.spectral_axis.unit))
plt.ylabel("flux ({:latex})".format(spec1d_sub.flux.unit))
plt.legend()
plt.title('Gaussian fit to the [OII] line')
plt.show()
Measure the equivalent width of the lines#
This needs the spectrum continuum normalized.
spec1d_norm = spec1d / cont_fit
plt.figure(figsize=[10,6])
plt.plot(spec1d_norm.spectral_axis, spec1d_norm.flux, label='data')
plt.axhline(1,color='black',label='flux = 1')
plt.xlabel("wavelength ({:latex})".format(spec1d_norm.spectral_axis.unit))
plt.ylabel("flux (normalized)")
plt.xlim(6500,6600)
plt.legend()
plt.title("Continuum-normalized spectrum, zoomed on [OII]")
plt.show()
plt.figure(figsize=[10,6])
plt.plot(spec1d_norm.spectral_axis, spec1d_norm.uncertainty.array, label='data')
plt.xlabel("wavelength ({:latex})".format(spec1d_norm.spectral_axis.unit))
plt.ylabel("uncertainty (normalized)")
plt.xlim(6500,6600)
plt.legend()
plt.title("Uncertainty of continuum-normalized spectrum, zoomed on [OII]")
plt.show()
equivalent_width(spec1d_norm, regions=SpectralRegion(6540*u.AA, 6570*u.AA))
\[-28.243948 \; \mathrm{\mathring{A}}\]
Find the best-fitting template#
It needs a list of templates and the redshift of the observed galaxy. For the templates, I am using a set of model SEDs generated with Bruzual & Charlot stellar population models, emission lines, and dust attenuation as described in Pacifici et al. (2012).
Developer note#
Maybe there is a way to speed this up (maybe using astropy model_sets)? This fit is run with 100 models, but ideally, if we want to extract physical parameters from this, we would need at least 10,000 models.
A dictionary structure with meaningful keys (which can be, e.g., tuples of the relevant physical parameters) could be better than a list? It could make later analysis much clearer than having to map from the list indices back to the relevant parameters.
templatedir = './mos_spectroscopy/templates/'
zz = 0.758
templatelist = []
for i in range (1, 101):
template_file = "{0}{1:05d}.dat".format(templatedir,i)
template = ascii.read(template_file)
temp1d = Spectrum1D(spectral_axis=template['col1']*u.AA,flux=template['col2']*u.erg/u.s/u.AA)
templatelist.append(temp1d)
tm_results = template_comparison.template_match(observed_spectrum=spec1d, spectral_templates=templatelist, resample_method="flux_conserving", redshift=zz)
tm_results[0]
<Spectrum1D(flux=<Quantity [0. , 0. , 0. , ..., 0.09480264, 0.09410727,
0.09341189] 1e-19 erg / (Angstrom s cm2)>, spectral_axis=<SpectralAxis [ 177.0306, 178.6128, 180.195 , ..., 170526. , 171229.2 ,
171932.4 ] Angstrom>)>
plt.figure(figsize=[10, 6])
plt.plot(spec1d.wavelength, spec1d.flux, label="data")
plt.plot(tm_results[0].wavelength, tm_results[0].flux,color='r',alpha=0.5,label='model')
plt.xlim(6000, 9000)
plt.xlabel("wavelength ({:latex})".format(spec1d_norm.spectral_axis.unit))
plt.ylabel("flux ({:latex})".format(spec1d_sub.flux.unit))
plt.legend()
plt.title("Observed spectrum and best-fitting model template")
plt.show()
Potential next steps:#
- Automatic template *fitting* to get the redshift
- Measure if emission-line profile is consistent with PSF
- Measure line intensities in 2D
- Convert distances from pixels to kpc
- Run the line measurements on a set of lines
- Run the whole procedure on all galaxies detected on a mask