How to Browse Roman Observations#
Learning Goals#
This is a beginner tutorial on browsing observations and data products from the Roman Space Telescope available on MAST. We’ll explore Roman observation metadata and viewing results interactively. By the end of this tutorial, you will:
Understand the structure of Roman observation metadata.
Be able to view and explore observation query results with
mast-table.Know how to visualize observation footprints with
mast-aladin.
Introduction#
This tutorial shows you how to explore Roman observations from MAST interactively in a Jupyter notebook.
You’ll use two Python packages:
mast-tableto view observation data in an interactive table.mast-aladinto visualize observation footprints on a sky map.
About the Data#
Note: Roman Space Telescope observations are not yet publicly available. This tutorial uses
representative cached data from simulated Roman observations to demonstrate the interactive visualization
features of mast-table and mast-aladin.
Imports#
We will import the following in this tutorial:
astropy.table.Table: work with tabular data in ECSV format.mast_table.MastTable: interactive widget for browsing observation data.mast_aladin.MastAladin: interactive sky map widget for visualizing observation footprints.
from astropy.table import Table
from mast_aladin import MastAladin
from mast_table import MastTable
Loading Roman Observation Data#
In this section, we load cached Roman observation data and explore the available metadata columns.
Searchable Column List#
First, let’s load the list of searchable columns available in the Roman metadata:
# When Roman data are publicly available in the archive, you can retrieve the
# column list like this:
# from astroquery.mast import MastMissions
# mast = MastMissions(mission="roman")
# columns = mast.get_column_list()
# Until then, we load representative Roman query results from cache:
columns = Table.read("data/roman_columns.ecsv", format="ascii.ecsv")
print(f"Found {len(columns)} searchable columns. First 10:\n")
for row in columns[:10]:
print(f" {row['name']:30s} ({row['data_type']})")
Found 147 searchable columns. First 10:
search_pos (string)
fileSetName (string)
dataset_category (string)
productLevel (string)
optical_element (string)
exposure_time (float)
visit_start_time (datetime)
program (integer)
pass (int)
segment (int)
Loading Observation Data#
Now load the cached observation data. This dataset contains observations from
RA=270°, Dec=66° with the F146 filter (a Roman WFI wide-band filter). The data
includes all available metadata columns, including the s_region polygon used
for footprint visualization.
# When Roman data are publicly available in the archive, you can query for
# observations like this:
# import astropy.units as u
# from astropy.coordinates import SkyCoord
# target = SkyCoord(ra=270, dec=66, unit="deg")
# roman_obs = mast.query_region(
# target,
# radius=0.3 * u.deg,
# optical_element="F146",
# select_cols="*",
# )
# Until then, we load representative Roman query results from cache:
roman_obs = Table.read("data/roman_obs_f146.ecsv", format="ascii.ecsv")
print(f"Found {len(roman_obs)} Roman observations with F146 filter")
roman_obs[:5]
Found 84 Roman observations with F146 filter
Table length=5
| search_pos | fileSetName | dataset_category | productLevel | optical_element | exposure_time | visit_start_time | program | pass | segment | exposure_type | program_category | program_subcategory | data_release | program_title | detector | origin | calibration_software_version | ArchiveFileID | x_ref | y_ref | pixel_scale_ref | pixel_scale | projection | image_shape | ra | dec | orientation | orientation_ref | skycell_name | telescope | rotation_matrix | reference_frame | science_category | calibration_software_name | data_release_id | prd_version | product_type | execution_plan | exposure_grouping | max_exposure_time | model_type | observation | filedate | time_mean | investigator_name | instrument_name | visit | exposure_start_time | exposure_end_time | engineering_quality | exposure_nresultants | exposure_data_problem | exposure_frame_time | effective_exposure_time | ma_table_name | ma_table_number | ma_table_id | read_pattern | exposure_truncated | s_region | access | active | aperture_name | bank | conversion_megajanskys | conversion_megajanskys_uncertainty | counts | crds_context | crds_version | dec_reference | dec_v1 | dither_executed_pattern | dither_primary_name | dither_subpixel_name | electronics | ephemeris_reference_frame | ephemeris_time | ephemeris_type | epoch | good_pixel_fraction | guide_mode | guide_star_id | guide_window_id | image_median | image_rms | led | observation_id | pa_aperture | pa_v3 | pixel_area | pointing_engineering_source | ra_reference | ra_v1 | roll_ref | scale_factor | sdf_software_version | spatial_x | spatial_y | spatial_z | target_aperture | target_dec | target_ra | v2_ref | v3_ref | v3yangle | velocity_x | velocity_y | velocity_z | visit_file_activity | visit_file_group | visit_file_sequence | visit_id | visit_internal_target | visit_nexposures | visit_type | vparity | wfi_parallel | window_xstart | window_xstop | window_ystart | window_ystop | zodiacal_light | catalog_id | cdp_ctx | dither | file_number | g2dp_run_id | num_src | optical_model | phot_filter_cut_off | program_complete | unit_flux | unit_wl | visit_exptime | wcs_field_center_dec | wcs_field_center_ra | wl_contamination_range | wl_reference | wl_snr_global_range | msos_detection_efficiency_version | msos_events_version | msos_photometry_version | season | sequence | ang_sep | search_key |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| str6 | str42 | str8 | str7 | str4 | float64 | str19 | int64 | str1 | str1 | str9 | str3 | str3 | str12 | str11 | str5 | str9 | str5 | str7 | float64 | float64 | float64 | float64 | str3 | str12 | float64 | float64 | float64 | float64 | str12 | str5 | str25 | str4 | str4 | str8 | float64 | int64 | str13 | int64 | str15 | float64 | str26 | int64 | str27 | str27 | str4 | str3 | int64 | str27 | str27 | str2 | int64 | str1 | float64 | int64 | str1 | int64 | str7 | str267 | bool | str121 | str7 | str1 | str10 | str1 | float64 | float64 | int64 | str15 | str6 | float64 | float64 | str2 | str1 | str1 | str1 | str1 | float64 | str10 | str1 | float64 | str7 | str1 | str1 | float64 | float64 | str1 | str23 | float64 | float64 | float64 | str10 | float64 | float64 | float64 | float64 | str1 | float64 | float64 | float64 | str7 | float64 | float64 | float64 | float64 | float64 | float64 | float64 | float64 | str2 | int64 | int64 | str19 | str1 | int64 | str19 | int64 | str1 | int64 | int64 | int64 | int64 | float64 | int64 | int64 | float64 | int64 | str1 | int64 | str1 | str1 | str1 | str1 | str1 | float64 | float64 | float64 | str1 | float64 | str1 | str1 | str1 | str1 | str1 | int64 | float64 | str7 |
| 270 66 | r00004_r0_full_270p65x69y50_f146 | skycell | 3, 4 | F146 | 396.3476328314121 | -- | 4 | -- | 1 | -- | ? | CAL | HLWAS - DR 0 | ? | -- | STSCI/SOC | 1.0.0 | 4063970 | 2499.5 | -88700.5 | 1.527777777777778e-05 | 1.527100503763466e-05 | TAN | [5000, 5000] | 270.0 | 65.99543177527184 | 0.0 | 0.0 | 270p65x69y50 | ROMAN | [[1.0, 0.0], [-0.0, 1.0]] | ICRS | ? | RomanCAL | -- | -- | p_visit_coadd | 1 | -- | 597.7069702148438 | MosaicSegmentationMapModel | 1 | 2026-06-08T17:32:59.9720000 | 2027-06-01T00:00:00 | ? | WFI | -- | 2027-06-01T00:00:00 | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | POLYGON ICRS 269.906278732 65.957230772 269.906000936 66.033574401 270.093999064 66.033574401 270.093721268 65.957230772 | PENDING | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | 0.0 | 4063970 |
| 270 66 | r00004_r0_p01001_270p65x69y50_f146 | skycell | 3, 4 | F146 | 270.2572648219062 | -- | 4 | 1 | 1 | -- | ? | CAL | HLWAS - DR 0 | ? | -- | STSCI/SOC | 1.0.0 | 4062956 | 2499.5 | -88700.5 | 1.527777777777778e-05 | 1.527100503763466e-05 | TAN | [5000, 5000] | 270.0 | 65.99543177527184 | 0.0 | 0.0 | 270p65x69y50 | ROMAN | [[1.0, 0.0], [-0.0, 1.0]] | ICRS | ? | RomanCAL | -- | -- | p_visit_coadd | 1 | -- | 398.4713134765625 | MosaicSegmentationMapModel | 1 | 2026-06-08T17:31:08.7600000 | 2027-06-01T00:00:00 | ? | WFI | -- | 2027-06-01T00:00:00 | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | POLYGON ICRS 269.906278732 65.957230772 269.906000936 66.033574401 270.093999064 66.033574401 270.093721268 65.957230772 | PENDING | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | 0.0 | 4062956 |
| 270 66 | r00004_r0_p01002_270p65x69y50_f146 | skycell | 3, 4 | F146 | 199.2356262208502 | -- | 4 | 2 | 1 | -- | ? | CAL | HLWAS - DR 0 | ? | -- | STSCI/SOC | 1.0.0 | 4063583 | 2499.5 | -88700.5 | 1.527777777777778e-05 | 1.527100503763466e-05 | TAN | [5000, 5000] | 270.0 | 65.99543177527184 | 0.0 | 0.0 | 270p65x69y50 | ROMAN | [[1.0, 0.0], [-0.0, 1.0]] | ICRS | ? | RomanCAL | -- | -- | p_visit_coadd | 1 | v01002001001001 | 199.2356872558594 | MosaicSegmentationMapModel | 1 | 2026-06-08T17:30:03.6010000 | 2027-06-01T00:00:00 | ? | WFI | 1 | 2027-06-01T00:00:00 | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | POLYGON ICRS 269.906278732 65.957230772 269.906000936 66.033574401 270.093999064 66.033574401 270.093721268 65.957230772 | PENDING | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | 0.0 | 4063583 |
| 270 66 | r0000401001001001002_0005_wfi01_f146 | detector | 1, 2, 4 | F146 | 199.23563 | 2020-01-01T00:00:00 | 4 | 1 | 1 | WFI_IMAGE | ? | CAL | -- | ? | WFI01 | STSCI/SOC | 1.0.0 | 4059001 | -- | -- | -- | -- | -- | -- | 269.8933609060532 | 66.06050944442256 | -- | -- | -- | ROMAN | -- | ICRS | ? | RomanCAL | -- | -- | l2 | 1 | -- | -- | SegmentationMapModel | 1 | 2026-06-08T14:01:44.4930000 | -- | ? | WFI | 2 | 2027-06-01T00:00:00 | 2027-06-01T00:03:19.2360000 | OK | 12 | ? | 3.16247 | 199 | ? | 5 | SCI0005 | [[1], [2], [3, 4], [5, 6, 7, 8, 9, 10], [11, 12, 13, 14, 15, 16], [17, 18, 19, 20, 21, 22], [23, 24, 25, 26, 27, 28], [29, 30, 31, 32, 33, 34], [35, 36, 37, 38, 39, 40, 41, 42], [43, 44, 45, 46, 47, 48, 49, 50, 51, 52], [53, 54, 55, 56, 57, 58, 59, 60, 61, 62], [63]] | True | POLYGON ICRS 270.047933122 65.999265019 270.047727002 66.122228516 269.737464178 66.122195179 269.740800796 65.999341614 | PUBLIC | F | WFI01_FULL | 1 | 0.2403932227383371 | 0.009352363628198133 | -999999 | roman_0054.pmap | 13.0.6 | 66.06050944442256 | 66.5210001713326 | [] | ? | ? | A | ? | 61557.0 | DEFINITIVE | ? | 0.9990696961370399 | WIM-ACQ | ? | ? | 1.07063901424408 | 0.06377484649419785 | 1 | 00004010010010010020005 | 0.0 | 59.99905187223839 | 2.808338995372751e-13 | CALCULATED | 269.8933609060532 | 270.060979800848 | 59.84649927708432 | 1.000000345562061 | ? | -52044463.08234682 | -131312741.3110773 | -56910542.46910208 | WFI_CEN | 66.025 | 270.061 | 1312.94914524848 | -1040.785372675504 | -60.0 | 27.50790709460299 | -9.484643417914059 | -4.112149494244798 | 01 | 0 | 1 | 0000401001001001002 | F | -999999 | GENERAL_ENGINEERING | -1 | F | -999999 | -999983 | -999999 | -999983 | -1.0 | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | 0.0 | 4059001 |
| 270 66 | r0000401001001001001_0005_wfi10_f146 | detector | 1, 2, 4 | F146 | 199.23563 | 2020-01-01T00:00:00 | 4 | 1 | 1 | WFI_IMAGE | ? | CAL | -- | ? | WFI10 | STSCI/SOC | 1.0.0 | 4059272 | -- | -- | -- | -- | -- | -- | 270.1668432063658 | 66.03552103957715 | -- | -- | -- | ROMAN | -- | ICRS | ? | RomanCAL | -- | -- | l2 | 1 | -- | -- | SegmentationMapModel | 1 | 2026-06-08T14:25:23.4680000 | -- | ? | WFI | 1 | 2027-06-01T00:00:00 | 2027-06-01T00:03:19.2360000 | OK | 12 | ? | 3.16247 | 199 | ? | 5 | SCI0005 | [[1], [2], [3, 4], [5, 6, 7, 8, 9, 10], [11, 12, 13, 14, 15, 16], [17, 18, 19, 20, 21, 22], [23, 24, 25, 26, 27, 28], [29, 30, 31, 32, 33, 34], [35, 36, 37, 38, 39, 40, 41, 42], [43, 44, 45, 46, 47, 48, 49, 50, 51, 52], [53, 54, 55, 56, 57, 58, 59, 60, 61, 62], [63]] | True | POLYGON ICRS 270.319355029 65.974344550 270.322525191 66.097218855 270.012545414 66.097236432 270.012492285 65.974275140 | PUBLIC | F | WFI10_FULL | 1 | 0.2341963445516532 | 0.00911127755471677 | -999999 | roman_0054.pmap | 13.0.6 | 66.03552103957715 | 66.49600017133261 | [] | ? | ? | A | ? | 61557.0 | DEFINITIVE | ? | 0.9998861279828125 | WIM-ACQ | ? | ? | 1.097662687301636 | 0.06530329585075378 | 1 | 00004010010010010010005 | 0.0 | 59.99905189658607 | 2.808606467157983e-13 | CALCULATED | 270.1668432063658 | 269.9999798211159 | 60.15245104720054 | 1.000000345562061 | ? | -52044463.08234682 | -131312741.3110773 | -56910542.46910208 | WFI_CEN | 66.0 | 270.0 | 1557.339968333944 | -617.4160501879029 | -60.0 | 27.50790709460299 | -9.484643417914059 | -4.112149494244798 | 01 | 0 | 1 | 0000401001001001001 | F | -999999 | GENERAL_ENGINEERING | -1 | F | -999999 | -999983 | -999999 | -999983 | -1.0 | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | 0.005085786944444445 | 4059272 |
Observations across product levels. This dataset includes all processing levels (1=raw, 2=calibrated, 3=resampled, 4=high-level) for the same sky region:
# When Roman data are publicly available in the archive, query across all
# product levels:
# all_obs = mast.query_criteria(
# coordinates=target,
# radius=0.3 * u.deg,
# productLevel=["1", "2", "3", "4"],
# select_cols="*",
# )
# Until then, we load representative Roman query results from cache:
all_obs = Table.read("data/all_obs.ecsv", format="ascii.ecsv")
print(f"Found {len(all_obs)} observations across all processing levels")
all_obs[:3]
Found 803 observations across all processing levels
Table length=3
| search_pos | fileSetName | dataset_category | productLevel | optical_element | exposure_time | visit_start_time | program | pass | segment | exposure_type | program_category | program_subcategory | data_release | program_title | detector | origin | calibration_software_version | ArchiveFileID | x_ref | y_ref | pixel_scale_ref | pixel_scale | projection | image_shape | ra | dec | orientation | orientation_ref | skycell_name | telescope | rotation_matrix | reference_frame | science_category | calibration_software_name | data_release_id | prd_version | product_type | execution_plan | exposure_grouping | max_exposure_time | model_type | observation | filedate | time_mean | investigator_name | instrument_name | visit | exposure_start_time | exposure_end_time | engineering_quality | exposure_nresultants | exposure_data_problem | exposure_frame_time | effective_exposure_time | ma_table_name | ma_table_number | ma_table_id | read_pattern | exposure_truncated | s_region | access | active | aperture_name | bank | conversion_megajanskys | conversion_megajanskys_uncertainty | counts | crds_context | crds_version | dec_reference | dec_v1 | dither_executed_pattern | dither_primary_name | dither_subpixel_name | electronics | ephemeris_reference_frame | ephemeris_time | ephemeris_type | epoch | good_pixel_fraction | guide_mode | guide_star_id | guide_window_id | image_median | image_rms | led | observation_id | pa_aperture | pa_v3 | pixel_area | pointing_engineering_source | ra_reference | ra_v1 | roll_ref | scale_factor | sdf_software_version | spatial_x | spatial_y | spatial_z | target_aperture | target_dec | target_ra | v2_ref | v3_ref | v3yangle | velocity_x | velocity_y | velocity_z | visit_file_activity | visit_file_group | visit_file_sequence | visit_id | visit_internal_target | visit_nexposures | visit_type | vparity | wfi_parallel | window_xstart | window_xstop | window_ystart | window_ystop | zodiacal_light | catalog_id | cdp_ctx | dither | file_number | g2dp_run_id | num_src | optical_model | phot_filter_cut_off | program_complete | unit_flux | unit_wl | visit_exptime | wcs_field_center_dec | wcs_field_center_ra | wl_contamination_range | wl_reference | wl_snr_global_range | msos_detection_efficiency_version | msos_events_version | msos_photometry_version | season | sequence | ang_sep | search_key |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| str6 | str53 | str12 | str7 | str5 | float64 | str19 | int64 | str1 | str1 | str12 | str3 | str4 | str12 | str11 | str5 | str9 | str5 | str7 | float64 | float64 | float64 | float64 | str3 | str12 | float64 | float64 | float64 | float64 | str12 | str5 | str25 | str7 | str4 | str8 | float64 | int64 | str13 | int64 | str15 | float64 | str26 | int64 | str27 | str27 | str4 | str3 | int64 | str27 | str27 | str2 | int64 | str1 | float64 | int64 | str1 | int64 | str7 | str267 | bool | str121 | str7 | str1 | str10 | str1 | float64 | float64 | int64 | str15 | str6 | float64 | float64 | str2 | str1 | str1 | str1 | str1 | float64 | str10 | str1 | float64 | str7 | str1 | str1 | float64 | float64 | str1 | str23 | float64 | float64 | float64 | str10 | float64 | float64 | float64 | float64 | str1 | float64 | float64 | float64 | str7 | float64 | float64 | float64 | float64 | float64 | float64 | float64 | float64 | str2 | int64 | int64 | str19 | str1 | int64 | str19 | int64 | str1 | int64 | int64 | int64 | int64 | float64 | int64 | int64 | float64 | int64 | str7 | int64 | str7 | str7 | str1 | str7 | str7 | float64 | float64 | float64 | str7 | float64 | str7 | str7 | str7 | str7 | str2 | int64 | float64 | str7 |
| 270 66 | r00004_p_v01001001001001_270p65x69y50_f062 | skycell | 3, 4 | F062 | 199.2356262173636 | -- | 4 | 1 | 1 | -- | ? | CAL | -- | ? | -- | STSCI/SOC | 1.0.0 | 4059473 | 2499.5 | -88700.5 | 1.527777777777778e-05 | 1.527100503763466e-05 | TAN | [5000, 5000] | 270.0 | 65.99543177527184 | 0.0 | 0.0 | 270p65x69y50 | ROMAN | [[1.0, 0.0], [-0.0, 1.0]] | ICRS | ? | RomanCAL | -- | -- | p_visit_coadd | 1 | v01001001001001 | 199.2356872558594 | MosaicSegmentationMapModel | 1 | 2026-06-08T15:09:43.8100000 | 2027-06-01T00:00:00 | ? | WFI | 1 | 2027-06-01T00:00:00 | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | POLYGON ICRS 269.906278732 65.957230772 269.906000936 66.033574401 270.093999064 66.033574401 270.093721268 65.957230772 | PUBLIC | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | 0.0 | 4059473 |
| 270 66 | r00004_p_v01001001001002_270p65x69y50_f062 | skycell | 3, 4 | F062 | 199.2356262243796 | -- | 4 | 1 | 1 | -- | ? | CAL | -- | ? | -- | STSCI/SOC | 1.0.0 | 4059887 | 2499.5 | -88700.5 | 1.527777777777778e-05 | 1.527100503763466e-05 | TAN | [5000, 5000] | 270.0 | 65.99543177527184 | 0.0 | 0.0 | 270p65x69y50 | ROMAN | [[1.0, 0.0], [-0.0, 1.0]] | ICRS | ? | RomanCAL | -- | -- | p_visit_coadd | 1 | v01001001001002 | 199.2357025146484 | MosaicSegmentationMapModel | 1 | 2026-06-08T16:04:47.4180000 | 2027-06-01T00:00:00 | ? | WFI | 2 | 2027-06-01T00:00:00 | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | POLYGON ICRS 269.906278732 65.957230772 269.906000936 66.033574401 270.093999064 66.033574401 270.093721268 65.957230772 | PUBLIC | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | 0.0 | 4059887 |
| 270 66 | r00004_p_v01002001001001_270p65x69y50_f062 | skycell | 3, 4 | F062 | 199.2356262192821 | -- | 4 | 2 | 1 | -- | ? | CAL | -- | ? | -- | STSCI/SOC | 1.0.0 | 4059714 | 2499.5 | -88700.5 | 1.527777777777778e-05 | 1.527100503763466e-05 | TAN | [5000, 5000] | 270.0 | 65.99543177527184 | 0.0 | 0.0 | 270p65x69y50 | ROMAN | [[1.0, 0.0], [-0.0, 1.0]] | ICRS | ? | RomanCAL | -- | -- | p_visit_coadd | 1 | v01002001001001 | 199.2356872558594 | MosaicSegmentationMapModel | 1 | 2026-06-08T16:02:35.8790000 | 2027-06-01T00:00:00 | ? | WFI | 1 | 2027-06-01T00:00:00 | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | POLYGON ICRS 269.906278732 65.957230772 269.906000936 66.033574401 270.093999064 66.033574401 270.093721268 65.957230772 | PUBLIC | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | 0.0 | 4059714 |
The results are returned as an astropy.table.Table.
Useful columns include:
fileSetName: unique identifier for the observation file set.productLevel: processing level (1=raw, 2=calibrated, 3=resampled, 4=high-level).optical_element: filter used (F062, F087, F106, F129, F146, F158, F184 for WFI).exposure_time: exposure time in seconds.detector: detector identifier (WFI01 to WFI18 for the WFI mosaic).program: program ID number.s_region: sky-region footprint as an STC-SPOLYGONstring.
Another Sky Position#
Here’s another dataset from a different sky position near the galactic center (RA=266.4°, Dec=-29.0°):
# When Roman data are publicly available in the archive, query near the
# galactic center:
# galactic_center = SkyCoord(ra=266.4, dec=-29.0, unit="deg")
# position_obs = mast.query_criteria(
# coordinates=galactic_center,
# radius=0.5 * u.deg,
# productLevel=["1", "2", "3", "4"],
# select_cols="*",
# )
# Until then, we load representative Roman query results from cache:
position_obs = Table.read("data/position_obs.ecsv", format="ascii.ecsv")
print(f"Found {len(position_obs)} observations near the galactic center")
position_obs[:5]
Found 778 observations near the galactic center
Table length=5
| search_pos | fileSetName | dataset_category | productLevel | optical_element | exposure_time | visit_start_time | program | pass | segment | exposure_type | program_category | program_subcategory | data_release | program_title | detector | origin | calibration_software_version | ArchiveFileID | x_ref | y_ref | pixel_scale_ref | pixel_scale | projection | image_shape | ra | dec | orientation | orientation_ref | skycell_name | telescope | rotation_matrix | reference_frame | science_category | calibration_software_name | data_release_id | prd_version | product_type | execution_plan | exposure_grouping | max_exposure_time | model_type | observation | filedate | time_mean | investigator_name | instrument_name | visit | exposure_start_time | exposure_end_time | engineering_quality | exposure_nresultants | exposure_data_problem | exposure_frame_time | effective_exposure_time | ma_table_name | ma_table_number | ma_table_id | read_pattern | exposure_truncated | s_region | access | active | aperture_name | bank | conversion_megajanskys | conversion_megajanskys_uncertainty | counts | crds_context | crds_version | dec_reference | dec_v1 | dither_executed_pattern | dither_primary_name | dither_subpixel_name | electronics | ephemeris_reference_frame | ephemeris_time | ephemeris_type | epoch | good_pixel_fraction | guide_mode | guide_star_id | guide_window_id | image_median | image_rms | led | observation_id | pa_aperture | pa_v3 | pixel_area | pointing_engineering_source | ra_reference | ra_v1 | roll_ref | scale_factor | sdf_software_version | spatial_x | spatial_y | spatial_z | target_aperture | target_dec | target_ra | v2_ref | v3_ref | v3yangle | velocity_x | velocity_y | velocity_z | visit_file_activity | visit_file_group | visit_file_sequence | visit_id | visit_internal_target | visit_nexposures | visit_type | vparity | wfi_parallel | window_xstart | window_xstop | window_ystart | window_ystop | zodiacal_light | catalog_id | cdp_ctx | dither | file_number | g2dp_run_id | num_src | optical_model | phot_filter_cut_off | program_complete | unit_flux | unit_wl | visit_exptime | wcs_field_center_dec | wcs_field_center_ra | wl_contamination_range | wl_reference | wl_snr_global_range | msos_detection_efficiency_version | msos_events_version | msos_photometry_version | season | sequence | ang_sep | search_key |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| str9 | str36 | str8 | str7 | str4 | float64 | str27 | int64 | str1 | str1 | str9 | str3 | str4 | str1 | str11 | str5 | str9 | str5 | str7 | float64 | float64 | float64 | float64 | str1 | str1 | float64 | float64 | float64 | float64 | str1 | str5 | str1 | str4 | str4 | str1 | float64 | int64 | str2 | int64 | str1 | float64 | str20 | int64 | str27 | str1 | str13 | str3 | int64 | str27 | str27 | str2 | int64 | str1 | float64 | int64 | str7 | int64 | str7 | str85 | bool | str125 | str6 | str1 | str10 | str4 | float64 | float64 | int64 | str15 | str6 | float64 | float64 | str2 | str4 | str4 | str4 | str7 | float64 | str10 | str1 | float64 | str9 | str10 | str20 | float64 | float64 | str4 | str28 | float64 | float64 | float64 | str10 | float64 | float64 | float64 | float64 | str8 | float64 | float64 | float64 | str7 | float64 | float64 | float64 | float64 | float64 | float64 | float64 | float64 | str2 | int64 | int64 | str19 | str1 | int64 | str20 | int64 | str1 | int64 | int64 | int64 | int64 | float64 | int64 | int64 | float64 | int64 | str1 | int64 | str1 | str1 | str1 | str1 | str1 | float64 | float64 | float64 | str1 | float64 | str1 | str1 | str1 | str1 | str1 | int64 | float64 | str7 |
| 266.4 -29 | r0018501001001001002_0001_wfi10_f146 | detector | 1, 2, 4 | F146 | 66.41188 | 2027-08-28T01:04:24.1470000 | 185 | 1 | 1 | WFI_IMAGE | CCS | GBTD | -- | WFI_IMAGING | WFI10 | STSCI/SOC | 1.0.1 | 4597767 | -- | -- | -- | -- | -- | -- | 266.4304986809415 | -28.99299779791027 | -- | -- | -- | ROMAN | -- | ICRS | None | -- | -- | -- | l2 | 1 | -- | -- | SegmentationMapModel | 1 | 2026-07-09T22:49:59.3150000 | -- | Mutchler, Max | WFI | 2 | 2027-08-28T01:06:15.3630000 | 2027-08-28T01:07:24.9370000 | OK | 6 | ? | 3.16247 | 66 | IM_66_6 | 1002 | SCI1002 | [[1], [2, 3], [4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16], [17, 18, 19, 20], [21]] | True | POLYGON ICRS 266.402122703 -28.909504523 266.333218980 -29.016567812 266.458964007 -29.077295531 266.527162014 -28.969775755 | PUBLIC | F | WFI10_FULL | None | 0.2341963445516532 | 0.00911127755471677 | 0 | roman_0056.pmap | 13.0.6 | -28.9935667787677 | -29.42825730856501 | [] | NONE | NONE | None | EME2000 | 61644.54166666666 | DEFINITIVE | ? | 0.4528883999180456 | WIM-TRACK | PGS1000001 | 00185010010010010021 | 0.002738525392487645 | 0.0002187767968280241 | None | 0018501001001001002031010001 | -90.9542117592229 | 269.1371860267067 | 2.808606467157983e-13 | CALCULATED | 266.4329823531054 | 266.2418912198221 | -90.9542117592229 | 0.9999078190628647 | 2026.2.3 | 136751453.0755229 | -62336583.5430449 | -27106614.72661682 | WFI_CEN | -28.99473830513878 | 266.5179988826289 | 1557.339968333944 | -617.4160501879029 | -60.0 | 12.93908225332003 | 24.85885498492247 | 10.79155651628822 | 01 | 3 | 1 | 0018501001001001002 | F | 1 | PRIME_TARGETED_FIXED | -1 | F | 3017 | 3080 | 1917 | 1980 | -1.0 | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | 0.0 | 4597767 |
| 266.4 -29 | r0018501001001002002_0001_wfi10_f146 | detector | 1, 2, 4 | F146 | 66.41188 | 2027-08-28T01:20:22.2540000 | 185 | 1 | 1 | WFI_IMAGE | CCS | GBTD | -- | WFI_IMAGING | WFI10 | STSCI/SOC | 1.0.1 | 4597608 | -- | -- | -- | -- | -- | -- | 266.4304976107879 | -28.99301463337075 | -- | -- | -- | ROMAN | -- | ICRS | None | -- | -- | -- | l2 | 1 | -- | -- | SegmentationMapModel | 2 | 2026-07-09T22:48:26.1620000 | -- | Mutchler, Max | WFI | 2 | 2027-08-28T01:22:13.5710000 | 2027-08-28T01:23:23.1450000 | OK | 6 | ? | 3.16247 | 66 | IM_66_6 | 1002 | SCI1002 | [[1], [2, 3], [4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16], [17, 18, 19, 20], [21]] | True | POLYGON ICRS 266.402123573 -28.909520852 266.333217345 -29.016582912 266.458960975 -29.077312874 266.527161501 -28.969794315 | PUBLIC | F | WFI10_FULL | None | 0.2341963445516532 | 0.00911127755471677 | 0 | roman_0056.pmap | 13.0.6 | -28.99358361579991 | -29.42827077986684 | [] | NONE | NONE | None | EME2000 | 61644.54166666666 | DEFINITIVE | ? | 0.4528883999180456 | WIM-TRACK | PGS1000001 | 00185010010010020021 | 0.002738525392487645 | 0.0002187767968280241 | None | 0018501001001002002031010001 | -90.95304342032429 | 269.1383593959756 | 2.808606467157983e-13 | CALCULATED | 266.4329812832518 | 266.2418799312824 | -90.95304342032429 | 0.9999078190651632 | 2026.2.3 | 136751453.0755229 | -62336583.5430449 | -27106614.72661682 | WFI_CEN | -28.99475670122298 | 266.517997786789 | 1557.339968333944 | -617.4160501879029 | -60.0 | 12.93908225332003 | 24.85885498492247 | 10.79155651628822 | 01 | 3 | 1 | 0018501001001002002 | F | 1 | PRIME_TARGETED_FIXED | -1 | F | 3017 | 3080 | 1917 | 1980 | -1.0 | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | 0.0 | 4597608 |
| 266.4 -29 | r0018501001001003002_0001_wfi10_f146 | detector | 1, 2, 4 | F146 | 66.41188 | 2027-08-28T01:38:13.2500000 | 185 | 1 | 1 | WFI_IMAGE | CCS | GBTD | -- | WFI_IMAGING | WFI10 | STSCI/SOC | 1.0.1 | 4597043 | -- | -- | -- | -- | -- | -- | 266.4305001000669 | -28.99295965644523 | -- | -- | -- | ROMAN | -- | ICRS | None | -- | -- | -- | l2 | 1 | -- | -- | SegmentationMapModel | 3 | 2026-07-09T22:45:19.5130000 | -- | Mutchler, Max | WFI | 2 | 2027-08-28T01:40:04.3980000 | 2027-08-28T01:41:13.9730000 | OK | 6 | ? | 3.16247 | 66 | IM_66_6 | 1002 | SCI1002 | [[1], [2, 3], [4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16], [17, 18, 19, 20], [21]] | True | POLYGON ICRS 266.402128055 -28.909465361 266.333219328 -29.016526171 266.458961449 -29.077258413 266.527164490 -28.969741091 | PUBLIC | F | WFI10_FULL | None | 0.2341963445516532 | 0.00911127755471677 | 0 | roman_0056.pmap | 13.0.6 | -28.99352863376036 | -29.42821238280238 | [] | NONE | NONE | None | EME2000 | 61644.54166666666 | DEFINITIVE | ? | 0.4528883999180456 | WIM-TRACK | PGS1000001 | 00185010010010030021 | 0.002738525392487645 | 0.0002187767968280241 | None | 0018501001001003002031010001 | -90.95185556904022 | 269.139552089103 | 2.808606467157983e-13 | CALCULATED | 266.4329837714532 | 266.2418721654874 | -90.95185556904022 | 0.9999078190570755 | 2026.2.3 | 136751453.0755229 | -62336583.5430449 | -27106614.72661682 | WFI_CEN | -28.99470331106842 | 266.5180001888999 | 1557.339968333944 | -617.4160501879029 | -60.0 | 12.93908225332003 | 24.85885498492247 | 10.79155651628822 | 01 | 3 | 1 | 0018501001001003002 | F | 1 | PRIME_TARGETED_FIXED | -1 | F | 3017 | 3080 | 1917 | 1980 | -1.0 | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | 0.0 | 4597043 |
| 266.4 -29 | r0018501001001004002_0001_wfi10_f146 | detector | 1, 2, 4 | F146 | 66.41188 | 2027-08-28T01:53:38.6260000 | 185 | 1 | 1 | WFI_IMAGE | CCS | GBTD | -- | WFI_IMAGING | WFI10 | STSCI/SOC | 1.0.1 | 4600929 | -- | -- | -- | -- | -- | -- | 266.4305039663307 | -28.99286924315706 | -- | -- | -- | ROMAN | -- | ICRS | None | -- | -- | -- | l2 | 1 | -- | -- | SegmentationMapModel | 4 | 2026-07-09T23:43:57.6680000 | -- | Mutchler, Max | WFI | 2 | 2027-08-28T01:55:29.8640000 | 2027-08-28T01:56:39.4380000 | OK | 6 | ? | 3.16247 | 66 | IM_66_6 | 1002 | SCI1002 | [[1], [2, 3], [4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16], [17, 18, 19, 20], [21]] | True | POLYGON ICRS 266.402133922 -28.909374433 266.333222722 -29.016433995 266.458963293 -29.077168515 266.527168823 -28.969652429 | PUBLIC | F | WFI10_FULL | None | 0.2341963445516532 | 0.00911127755471677 | 0 | roman_0056.pmap | 13.0.6 | -28.99343821206599 | -29.42811855220252 | [] | NONE | NONE | None | EME2000 | 61644.54166666666 | DEFINITIVE | ? | 0.4528883999180456 | WIM-TRACK | PGS1000001 | 00185010010010040021 | 0.002738525392487645 | 0.0002187767968280241 | None | 0018501001001004002031010001 | -90.9506686980288 | 269.1407436637746 | 2.808606467157983e-13 | CALCULATED | 266.4329876359226 | 266.2418658511324 | -90.9506686980288 | 0.999907819043643 | 2026.2.3 | 136751453.0755229 | -62336583.5430449 | -27106614.72661682 | WFI_CEN | -28.99461448328239 | 266.5180039380007 | 1557.339968333944 | -617.4160501879029 | -60.0 | 12.93908225332003 | 24.85885498492247 | 10.79155651628822 | 01 | 3 | 1 | 0018501001001004002 | F | 1 | PRIME_TARGETED_FIXED | -1 | F | 3017 | 3080 | 1917 | 1980 | -1.0 | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | 0.0 | 4600929 |
| 266.4 -29 | r0018501001001005002_0001_wfi10_f146 | detector | 1, 2, 4 | F146 | 66.41188 | 2027-08-28T02:09:13.3700000 | 185 | 1 | 1 | WFI_IMAGE | CCS | GBTD | -- | WFI_IMAGING | WFI10 | STSCI/SOC | 1.0.1 | 4602599 | -- | -- | -- | -- | -- | -- | 266.4304522817103 | -28.99284176521378 | -- | -- | -- | ROMAN | -- | ICRS | None | -- | -- | -- | l2 | 1 | -- | -- | SegmentationMapModel | 5 | 2026-07-09T23:51:02.4160000 | -- | Mutchler, Max | WFI | 2 | 2027-08-28T02:11:04.6330000 | 2027-08-28T02:12:14.2070000 | OK | 6 | ? | 3.16247 | 66 | IM_66_6 | 1002 | SCI1002 | [[1], [2, 3], [4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16], [17, 18, 19, 20], [21]] | True | POLYGON ICRS 266.402084227 -28.909346439 266.333170504 -29.016404749 266.458909596 -29.077141555 266.527117665 -28.969626709 | PUBLIC | F | WFI10_FULL | None | 0.2341963445516532 | 0.00911127755471677 | 0 | roman_0056.pmap | 13.0.6 | -28.99341073253949 | -29.42808764476068 | [] | NONE | NONE | None | EME2000 | 61644.54166666666 | DEFINITIVE | ? | 0.4528883999180456 | WIM-TRACK | PGS1000001 | 00185010010010050021 | 0.002738525392487645 | 0.0002187767968280241 | None | 0018501001001005002031010001 | -90.94947777885747 | 269.1419395416507 | 2.808606467157983e-13 | CALCULATED | 266.4329359455928 | 266.2418038338025 | -90.94947777885747 | 0.9999078190089659 | 2026.2.3 | 136751453.0755229 | -62336583.5430449 | -27106614.72661682 | WFI_CEN | -28.99458859617456 | 266.5179521893054 | 1557.339968333944 | -617.4160501879029 | -60.0 | 12.93908225332003 | 24.85885498492247 | 10.79155651628822 | 01 | 3 | 1 | 0018501001001005002 | F | 1 | PRIME_TARGETED_FIXED | -1 | F | 3017 | 3080 | 1917 | 1980 | -1.0 | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | 0.0 | 4602599 |
Viewing Results with mast-table#
mast-table is an interactive Jupyter widget for browsing observation
metadata tables. It supports pagination, column sorting, search-based
filtering, and column visibility toggles: all without leaving the
notebook.
Creating an Interactive Table#
Pass the Astropy table to MastTable to create an interactive widget:
# Create an interactive table widget from the observation data.
table_widget = MastTable(roman_obs)
table_widget
The table widget displays above with several interactive features:
Pagination controls at the bottom right to navigate through pages of results.
Column sorting: click on a column header to sort by that column.
Search box: filter rows by typing in the search field.
Column visibility: toggle which columns are displayed.
Exploring Table Features#
Try the following to explore the table’s capabilities:
Change pages. Use the arrow buttons at the bottom right to view different pages of results.
Sort data. Click on the
optical_elementcolumn header to sort observations by filter.Search. Try typing a program ID (for example,
185) in the search box to filter the table.Adjust page size. Use the “Rows per page” dropdown to display more or fewer results at once.
For a deeper dive on customizing mast-table, see the companion notebook Inspect Long Tables.
Visualizing Footprints with mast-aladin#
For a spatial view of the observations, mast-aladin renders an interactive
sky map (powered by Aladin Lite) directly in the notebook. This is
particularly useful for understanding the sky coverage of Roman observations
and how they overlap.
Loading Footprints#
Create an Aladin widget centered on the target region (RA=270°, Dec=66°). The sky map can then be overlaid with the polygon footprint of each Roman observation.
# Create an Aladin widget centered on the target region (RA=270, Dec=66).
aladin = MastAladin(
target="270 66",
fov=1.0, # Field of view in degrees.
height=500,
)
aladin
Interactive Sky View#
The Aladin widget provides several interactive features:
Pan. Click and drag to move around the sky.
Zoom. Use the scroll wheel or the zoom controls.
Layers. Toggle different survey layers (e.g., DSS, 2MASS) using the layer controls.
Footprints. Observation footprints can be displayed as polygons.
Roman footprints are stored in the s_region column as STC-S POLYGON
strings, which mast-aladin can overlay directly:
# Overlay Roman observation footprints on the Aladin sky map.
if len(roman_obs) > 0 and "s_region" in roman_obs.colnames:
aladin.add_graphic_overlay_from_stcs(
roman_obs["s_region"],
color="cyan",
opacity=0.5,
)
print(f"Added {len(roman_obs)} observation footprints to the map")
else:
print("No footprint data available")
Added 84 observation footprints to the map
The cyan polygons show the actual sky coverage of each Roman observation in
the dataset. Scroll back to the Aladin widget above to inspect them: you can
pan, zoom, and toggle background surveys to see how Roman tiles overlap real
reference imagery. For more options, see the
mast-aladin documentation.
Additional Resources#
Roman Space Telescope mission site: official mission information.
MAST Roman page: archive landing page for Roman.
astroquery.mast.MastMissionsdocumentation: API reference for mission-specific MAST queries.mast-tablerepository: widget documentation and examples.mast-aladinrepository: interactive sky-visualization documentation.MAST Search API: underlying REST API used by
MastMissions.Companion notebook: Inspect Long Tables: deeper dive into customizing
mast-tableviews.
Citations#
If you use astroquery, astropy, mast-table, or mast-aladin for
published research, please cite the authors. Follow these links for more
information:
About This Notebook#
Author: Hatice Karatay
Keywords: Roman, MAST, astroquery, mast-table, mast-aladin,
observations
First published: July 2026
Last updated: July 2026
