Gemini Observatory Archive
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(no punctuation; separate with spaces) Matches all words. Write !word to reject results that contain it
(no punctuation; separate with spaces) Text search the program Title. Matches all words. Write !word to reject results that contain it
(bibliography code of related publication) Search for data related to a publication by it's bibliography code.
(Name of Target) Enter a target name here. If you don't Resolve the target name into a co-ordinate search, this will do a search on the target name as specified in the phase-II. Be aware that observers sometimes use a different target name to what you expect - this is only really useful if you set up the Phase-II, or otherwise know exactly what target name was used. If you set a Name Resolver and click resolve, we will fetch co-ordinates of your target from the resolver specified and then the search will disregard the target name and search only by co-ordinates. Note that the name resolvers will not work solar system bodies.

Searches on the target name are not case sensitive, and you can use the * character as a wildcard - for example mrk* will find e.g. Mrk42, and *io* will find e.g. Io, Io.eph, Orion, etc.
(Name Resolver) Choose a Name Resolver and click the resolve button to attempt to find the co-ordinates of your named source. If the form has both a target name and co-ordinates, the search will disregard the target name. Note: The name resolvers will only work for objects outside the solar system, there's no capability for meaningful use with moving objects, for example planets.
(HH:MM:SS.ss or decimal degrees) Right Ascension. You can use HH:MM:SS[.ss...] or decimal degrees. In either case you can specify a single value or a range, eg 11:22:33 - 12:34:56. If you enter a single value, also see the Search Radius field.
([+-]DD:MM:SS.ss or decimal degrees) Declination. You can use [+|-]DD:MM:SS[.ss...] or decimal degrees. In either case you can specify a single value or a range, eg 11:22:33 - 12:34:56 or -65:43:21 - -12:34:56. If you enter a single value, also see the Search Radius field.
(arcsecs or decimal degrees) Search radius in arcseconds, unless you specify "d" or "degs" to make it decimal degrees. i.e. 180 means 180 arcseconds, 10degs or 10d means 10 degrees.
If RA and/or dec has been given as a single value (as opposed to a range), this specifies the size of the box around it to search. This is actually a simple search in a square box (in the tangent plane), not a true cone search. Strange things may happen near the poles.
(click to show / hide) Click where it says "Advanced Options" to show or hide the advanced options. (click to show / hide) Click where it says "Column Selection" to show or hide the panel that lets you choose the columns to be shown in the results. You need to click on 'Search' to apply the changes
(or Obs. ID / Data Label. Exact Match) You can put a program ID, Observation ID or Data Label into this box. The search will be for an exact match to what you put in, substring type matches are not provided. Example: GN-2001A-Q-1
(YYYYMMDD or start - end) You can specify 1) an individual date in the form YYYYMMDD, 2) a date range in the form yyyymmdd-YYYYMMDD, or 3) a date-time range in the form yyyymmddThhmmss[.s...]-YYYYMMDDTHHMMSS[.S...]. Examples: 20101231 or 20100101 - 20100131 or 20101122T012345-20101231T231234. You can also specify whether to search strictly on UTC date (note tha Gemini South observing nights span two UTC dates) or on Observing Night, which will use the traditional Gemini scheme of labelling observing nights by the UTC date at the start of the night with a 1400 (+- daylight savings in Chile) local time date rollover.
(Select GMOS for GMOS-N and GMOS-S) Select the instrument you are looking for data from.
(help) Select an Observation Class here, or set it to Any to not search by Observation Class.
(help) Select an Observation Type here, or set it to Any to not search by Observation Type.
(Imaging / Spectroscopy etc) Select Imaging or various Spectroscopy modes here. Spectroscopy implies all spectroscopic modes. Note that not all instruments support all these modes, such searches will return no results.
(help) Select data did or did not use Adaptive Optics, or that used specifically LGS or NGS AO.
(Processing status of data) Reduced data in the archive can have different reduction status. Select here if you would like to search for a particular type or reduced data, or for raw data only.


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Key: [P]: Preview an image of the data in your browser. [H]: Provenance and History. [D]: Download that one file. [A]: Program Abstract and PI / Co-I details. [L]: observing Log entries. Use the check-boxes to select a subset of the results to download, or if available a download all link is at the end of the table. Click the filename to see the full header in a new tab. Click anything else to add that to your search criteria. You can also save these results as JSON.

Download Filename↑↓ Data Label↑↓ UT Date Time↑↓ Inst↑↓ Class↑↓ Type↑↓ Object↑↓ WaveBand Binning↑↓ ExpT↑↓ QA↑↓
[P] [D]
N20250117S0030.fits [A] GN-2025A-Q-205-4-001 2025-01-17 08:31:39 GMOS-N partnerCal OBJECT G191B2B B480 : 0.530 4x4 120.00 Pass
[P] [D]
N20250117S0031.fits [A] GN-2025A-Q-205-4-002 2025-01-17 08:34:11 GMOS-N partnerCal FLAT GCALflat B480 : 0.530 4x4 1.00 Pass
[P] [D]
N20250117S0149.fits [A] GN-2025A-Q-205-5-001 2025-01-17 16:38:46 GMOS-N dayCal ARC CuAr B480 : 0.530 4x4 13.00 Undefined
Proprietary
N20250122S0128.fits [A] GN-2025A-Q-205-27-001 2025-01-22 13:11:56 GMOS-N acq OBJECT Gaia DR3 ... g 2x2 10.00 Usable
Proprietary
N20250122S0129.fits [A] [L] GN-2025A-Q-205-27-002 2025-01-22 13:13:37 GMOS-N acq OBJECT Gaia DR3 ... g 1x1 20.00 Usable
Proprietary
N20250122S0130.fits [A] [L] GN-2025A-Q-205-27-003 2025-01-22 13:15:13 GMOS-N acq OBJECT Gaia DR3 ... g 1x1 30.00 Usable
Proprietary
N20250122S0131.fits [A] [L] GN-2025A-Q-205-27-004 2025-01-22 13:16:46 GMOS-N acq OBJECT Gaia DR3 ... g 1x1 30.00 Usable
Proprietary
N20250122S0132.fits [A] [L] GN-2025A-Q-205-28-001 2025-01-22 13:19:13 GMOS-N science OBJECT Gaia DR3 ... B480 : 0.530 4x4 900.00 Usable
Proprietary
N20250205S0070.fits [A] [L] GN-2025A-Q-205-21-001 2025-02-05 10:38:07 GMOS-N acq OBJECT Gaia DR3 ... g 2x2 10.00 Pass
Proprietary
N20250205S0071.fits [A] GN-2025A-Q-205-21-002 2025-02-05 10:39:48 GMOS-N acq OBJECT Gaia DR3 ... g 1x1 20.00 Pass
Proprietary
N20250205S0072.fits [A] GN-2025A-Q-205-21-003 2025-02-05 10:43:08 GMOS-N acq OBJECT Gaia DR3 ... g 1x1 30.00 Pass
Proprietary
N20250205S0073.fits [A] GN-2025A-Q-205-22-001 2025-02-05 10:45:44 GMOS-N science OBJECT Gaia DR3 ... B480 : 0.530 4x4 600.00 Pass
Proprietary
N20250205S0074.fits [A] GN-2025A-Q-205-22-002 2025-02-05 10:56:00 GMOS-N science OBJECT Gaia DR3 ... B480 : 0.530 4x4 600.00 Pass
[P] [D]
N20250205S0075.fits [A] GN-2025A-Q-205-22-003 2025-02-05 11:06:32 GMOS-N partnerCal FLAT GCALflat B480 : 0.530 4x4 1.00 Pass
[P] [D]
N20250205S0526.fits [A] GN-2025A-Q-205-46-001 2025-02-05 22:56:50 GMOS-N dayCal ARC CuAr B480 : 0.530 4x4 13.00 Undefined
Proprietary
N20250206S0044.fits [A] [L] GN-2025A-Q-205-9-001 2025-02-06 08:52:11 GMOS-N acq OBJECT Gaia DR3 ... g 2x2 10.00 Pass
Proprietary
N20250206S0045.fits [A] GN-2025A-Q-205-9-002 2025-02-06 08:53:48 GMOS-N acq OBJECT Gaia DR3 ... g 1x1 20.00 Pass
Proprietary
N20250206S0046.fits [A] GN-2025A-Q-205-9-003 2025-02-06 08:55:37 GMOS-N acq OBJECT Gaia DR3 ... g 1x1 30.00 Pass
Proprietary
N20250206S0047.fits [A] GN-2025A-Q-205-10-001 2025-02-06 08:59:01 GMOS-N science OBJECT Gaia DR3 ... B480 : 0.530 4x4 960.00 Pass
Proprietary
N20250206S0048.fits [A] GN-2025A-Q-205-10-002 2025-02-06 09:15:17 GMOS-N science OBJECT Gaia DR3 ... B480 : 0.530 4x4 960.00 Pass
[P] [D]
N20250206S0049.fits [A] GN-2025A-Q-205-10-003 2025-02-06 09:31:48 GMOS-N partnerCal ARC CuAr B480 : 0.530 4x4 13.00 Pass
[P] [D]
N20250206S0050.fits [A] GN-2025A-Q-205-10-004 2025-02-06 09:32:27 GMOS-N partnerCal FLAT GCALflat B480 : 0.530 4x4 1.00 Pass
- this is always available at this link

Finding Associated Calibrations... This can take several seconds depending on the size of your calibration association search...
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