Gemini Observatory Archive
Help - About - Misc Files
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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 of reduced data, or for raw data only.
(Processing Tag) Reduced data in the archive is tagged by processing batch. Select here if you would like to search for a particular set of reduced data. This list populates from the current search results.


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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]
N20250529S0034.fits [A] [L] GN-2025A-Q-309-18-001 2025-05-29 08:31:06 GMOS-N acqCal OBJECT HZ44 r 1x1 2.00 Usable
[P] [D]
N20250611S0008.fits [A] GN-2025A-Q-309-22-001 2025-06-11 06:56:58 GMOS-N acqCal OBJECT HZ44 r 1x1 2.00 Pass
[P] [D]
N20250611S0009.fits [A] GN-2025A-Q-309-22-002 2025-06-11 06:59:58 GMOS-N acqCal OBJECT HZ44 r 1x1 20.00 Pass
[P] [D]
N20250611S0010.fits [A] GN-2025A-Q-309-22-003 2025-06-11 07:01:49 GMOS-N acqCal OBJECT HZ44 r 1x1 20.00 Pass
[P] [D]
N20250611S0011.fits [A] GN-2025A-Q-309-19-001 2025-06-11 07:04:58 GMOS-N partnerCal OBJECT HZ44 B480 : 0.670 1x1 150.00 Pass
[P] [D]
N20250611S0012.fits [A] GN-2025A-Q-309-19-002 2025-06-11 07:09:02 GMOS-N partnerCal FLAT GCALflat B480 : 0.670 1x1 60.00 Pass
[P] [D]
N20250611S0122.fits [A] GN-2025A-Q-309-20-001 2025-06-11 15:46:55 GMOS-N dayCal ARC CuAr B480 : 0.670 1x1 14.00 Undefined
Proprietary
N20251221S0036.fits [A] [L] GN-2025A-Q-309-7-001 2025-12-21 08:46:47 GMOS-N acq OBJECT 4C 32.25 r 2x2 15.00 Pass
Proprietary
N20251221S0037.fits [A] [L] GN-2025A-Q-309-7-002 2025-12-21 08:50:22 GMOS-N acq OBJECT 4C 32.25 r 1x1 60.00 Pass
Proprietary
N20251221S0038.fits [A] GN-2025A-Q-309-7-003 2025-12-21 08:53:10 GMOS-N acq OBJECT 4C 32.25 r 1x1 60.00 Pass
[P] [D]
N20251221S0039.fits [A] GN-2025A-Q-309-8-001 2025-12-21 08:56:34 GMOS-N partnerCal FLAT GCALflat B480 : 0.660 1x1 60.00 Pass
Proprietary
N20251221S0040.fits [A] GN-2025A-Q-309-8-002 2025-12-21 08:59:08 GMOS-N science OBJECT 4C 32.25 B480 : 0.660 1x1 1200.00 Pass
Proprietary
N20251221S0041.fits [A] GN-2025A-Q-309-8-003 2025-12-21 09:20:26 GMOS-N science OBJECT 4C 32.25 B480 : 0.660 1x1 1200.00 Pass
[P] [D]
N20251221S0042.fits [A] GN-2025A-Q-309-8-004 2025-12-21 09:41:59 GMOS-N partnerCal ARC CuAr B480 : 0.660 1x1 14.00 Pass
[P] [D]
N20251221S0043.fits [A] GN-2025A-Q-309-8-005 2025-12-21 09:43:49 GMOS-N partnerCal ARC CuAr B480 : 0.670 1x1 14.00 Pass
Proprietary
N20251221S0044.fits [A] GN-2025A-Q-309-8-006 2025-12-21 09:45:37 GMOS-N science OBJECT 4C 32.25 B480 : 0.670 1x1 1200.00 Pass
Proprietary
N20251221S0045.fits [A] GN-2025A-Q-309-8-007 2025-12-21 10:06:55 GMOS-N science OBJECT 4C 32.25 B480 : 0.670 1x1 1200.00 Pass
[P] [D]
N20251221S0046.fits [A] GN-2025A-Q-309-8-008 2025-12-21 10:28:28 GMOS-N partnerCal FLAT GCALflat B480 : 0.670 1x1 60.00 Pass
Proprietary
N20260108S0204.fits [A] [L] GN-2025A-Q-309-13-002 2026-01-08 12:53:11 GMOS-N acq OBJECT 4C 61.23 r 2x2 15.00 Pass
Proprietary
N20260108S0205.fits [A] [L] GN-2025A-Q-309-13-003 2026-01-08 12:55:57 GMOS-N acq OBJECT 4C 61.23 r 1x1 60.00 Pass
Proprietary
N20260108S0206.fits [A] GN-2025A-Q-309-13-004 2026-01-08 12:59:01 GMOS-N acq OBJECT 4C 61.23 r 1x1 60.00 Pass
[P] [D]
N20260108S0207.fits [A] GN-2025A-Q-309-14-001 2026-01-08 13:02:38 GMOS-N partnerCal FLAT GCALflat B480 : 0.645 1x1 100.00 Pass
Proprietary
N20260108S0208.fits [A] GN-2025A-Q-309-14-002 2026-01-08 13:05:52 GMOS-N science OBJECT 4C 61.23 B480 : 0.645 1x1 1200.00 Pass
Proprietary
N20260108S0209.fits [A] GN-2025A-Q-309-14-003 2026-01-08 13:27:09 GMOS-N science OBJECT 4C 61.23 B480 : 0.645 1x1 1200.00 Pass
[P] [D]
N20260108S0210.fits [A] GN-2025A-Q-309-14-004 2026-01-08 13:48:42 GMOS-N partnerCal ARC CuAr B480 : 0.645 1x1 14.00 Pass
[P] [D]
N20260108S0211.fits [A] GN-2025A-Q-309-14-005 2026-01-08 13:50:33 GMOS-N partnerCal ARC CuAr B480 : 0.695 1x1 14.00 Pass
Proprietary
N20260108S0212.fits [A] GN-2025A-Q-309-14-006 2026-01-08 13:52:20 GMOS-N science OBJECT 4C 61.23 B480 : 0.695 1x1 1200.00 Pass
Proprietary
N20260108S0213.fits [A] GN-2025A-Q-309-14-007 2026-01-08 14:13:37 GMOS-N science OBJECT 4C 61.23 B480 : 0.695 1x1 1200.00 Pass
[P] [D]
N20260108S0214.fits [A] GN-2025A-Q-309-14-008 2026-01-08 14:35:10 GMOS-N partnerCal FLAT GCALflat B480 : 0.695 1x1 60.00 Pass
[P] [D]
N20260108S0241.fits [A] GN-2025A-Q-309-17-001 2026-01-08 16:32:35 GMOS-N dayCal OBJECT Twilight B480 : 0.670 1x1 240.00 Usable
[P] [D]
N20260108S0242.fits [A] GN-2025A-Q-309-17-002 2026-01-08 16:39:04 GMOS-N dayCal OBJECT Twilight B480 : 0.670 1x1 400.00 Pass
Proprietary
N20260109S0229.fits [A] GN-2025A-Q-309-11-001 2026-01-09 11:25:32 GMOS-N acq OBJECT 3C 223.1 r 2x2 15.00 Usable
Proprietary
N20260109S0230.fits [A] GN-2025A-Q-309-11-002 2026-01-09 11:28:33 GMOS-N acq OBJECT 3C 223.1 r 1x1 60.00 Usable
Proprietary
N20260109S0231.fits [A] [L] GN-2025A-Q-309-23-001 2026-01-09 11:38:09 GMOS-N acq OBJECT 3C 223.1 r 2x2 15.00 Pass
Proprietary
N20260109S0232.fits [A] [L] GN-2025A-Q-309-23-002 2026-01-09 11:41:19 GMOS-N acq OBJECT 3C 223.1 r 1x1 60.00 Pass
Proprietary
N20260109S0233.fits [A] GN-2025A-Q-309-23-003 2026-01-09 11:44:17 GMOS-N acq OBJECT 3C 223.1 r 1x1 60.00 Pass
[P] [D]
N20260109S0234.fits [A] GN-2025A-Q-309-12-001 2026-01-09 11:48:28 GMOS-N partnerCal FLAT GCALflat B480 : 0.645 1x1 100.00 Pass
Proprietary
N20260109S0235.fits [A] GN-2025A-Q-309-12-002 2026-01-09 11:51:41 GMOS-N science OBJECT 3C 223.1 B480 : 0.645 1x1 1200.00 Pass
Proprietary
N20260109S0236.fits [A] GN-2025A-Q-309-12-003 2026-01-09 12:12:59 GMOS-N science OBJECT 3C 223.1 B480 : 0.645 1x1 1200.00 Pass
[P] [D]
N20260109S0237.fits [A] GN-2025A-Q-309-12-004 2026-01-09 12:34:32 GMOS-N partnerCal ARC CuAr B480 : 0.645 1x1 14.00 Pass
[P] [D]
N20260109S0238.fits [A] GN-2025A-Q-309-12-005 2026-01-09 12:36:23 GMOS-N partnerCal ARC CuAr B480 : 0.695 1x1 14.00 Pass
Proprietary
N20260109S0239.fits [A] GN-2025A-Q-309-12-006 2026-01-09 12:38:09 GMOS-N science OBJECT 3C 223.1 B480 : 0.695 1x1 1200.00 Pass
Proprietary
N20260109S0240.fits [A] GN-2025A-Q-309-12-007 2026-01-09 12:59:27 GMOS-N science OBJECT 3C 223.1 B480 : 0.695 1x1 1200.00 Pass
[P] [D]
N20260109S0241.fits [A] GN-2025A-Q-309-12-008 2026-01-09 13:21:00 GMOS-N partnerCal FLAT GCALflat B480 : 0.695 1x1 60.00 Pass
Proprietary
N20260114S0143.fits [A] [L] GN-2025A-Q-309-15-001 2026-01-14 11:42:55 GMOS-N acq OBJECT B2 1059+29 r 2x2 15.00 Pass
Proprietary
N20260114S0144.fits [A] [L] GN-2025A-Q-309-15-002 2026-01-14 11:47:23 GMOS-N acq OBJECT B2 1059+29 r 1x1 60.00 Pass
Proprietary
N20260114S0145.fits [A] GN-2025A-Q-309-15-003 2026-01-14 11:50:25 GMOS-N acq OBJECT B2 1059+29 r 1x1 60.00 Pass
[P] [D]
N20260114S0146.fits [A] GN-2025A-Q-309-16-001 2026-01-14 11:54:51 GMOS-N partnerCal FLAT GCALflat B480 : 0.645 1x1 100.00 Pass
Proprietary
N20260114S0147.fits [A] GN-2025A-Q-309-16-002 2026-01-14 11:58:04 GMOS-N science OBJECT B2 1059+29 B480 : 0.645 1x1 1000.00 Pass
Proprietary
N20260114S0148.fits [A] GN-2025A-Q-309-16-003 2026-01-14 12:16:02 GMOS-N science OBJECT B2 1059+29 B480 : 0.645 1x1 1000.00 Pass
[P] [D]
N20260114S0149.fits [A] GN-2025A-Q-309-16-004 2026-01-14 12:34:15 GMOS-N partnerCal ARC CuAr B480 : 0.645 1x1 14.00 Pass
[P] [D]
N20260114S0150.fits [A] GN-2025A-Q-309-16-005 2026-01-14 12:36:35 GMOS-N partnerCal ARC CuAr B480 : 0.695 1x1 14.00 Pass
Proprietary
N20260114S0151.fits [A] GN-2025A-Q-309-16-006 2026-01-14 12:38:22 GMOS-N science OBJECT B2 1059+29 B480 : 0.695 1x1 1000.00 Pass
Proprietary
N20260114S0152.fits [A] GN-2025A-Q-309-16-007 2026-01-14 12:56:20 GMOS-N science OBJECT B2 1059+29 B480 : 0.695 1x1 1000.00 Pass
[P] [D]
N20260114S0153.fits [A] GN-2025A-Q-309-16-008 2026-01-14 13:17:56 GMOS-N partnerCal FLAT GCALflat B480 : 0.695 1x1 60.00 Pass
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