Data Access Service Release History

Version	Release Date	Description of Changes
19.7	30Apr25	DEIMOS slit mask tables (when available) are included in the Raw overview page and included with the Level 0 packaging.
19.6	10Apr25	KOA now ingests lev2 (science ready) KPF reduced products computed by the KPF DRP. KOA now ingests lev2 (science ready) NIRES reduced products computed by the PypeIt DRP. The descriptions for the PypeIT DRP-computed reduced products for KCWI and NIRES have been updated. If your research uses these data products, please use these acknowledgements.
19.5	30Oct24	The default columns returned by TAP and PyKOA queries have been expanded to include more details about the instrumental setup for each instrument.
19.4	17Jun24	KOA has released Exploring the Compositional Diversity of Small Exoplanets from K2. This Keck Science Mission Support project (PI: A. Howard) observed a large collection of stars hosting super-Earths and Neptune-size planets discovered by the K2 mission extension to Kepler. The project has contributed radial velocities, activity indicators, and derived stellar properties for their sample of stars.
19.3	10Apr24	Data Era for KPF is included in the search results and selectable as "kpfera" in the TAP interface as well as a default returned keyword in PyKOA
19.2	10Oct23	First release of GUIDER data available from the Guider Search tab. The data from the GUIDER cameras will become publicly available per the expiration of each program's proprietary period. KOA Data Release Policy.
19.1	14Aug23	First release of KCRM data for KCWI. The data from KCRM will become publicly available per the expiration of each program's proprietary period. KOA Data Release Policy. Updates to the More Options Search interface to allow for mode searching for Solar data for KPF, and red, blue, and fpc modes for KCWI.
19.0	11April23	First release of Keck Planet Finder (KPF) data. The data from KPF will become publicly available per the expiration of each program's proprietary period. KOA Data Release Policy. The Moving Object Search Service (MOSS) is now accessible through the Python client PyKOA. See Python and TAP Access to KOA.
18.7	14October22	KOA now ingests level 2 Reduced MOSFIRE products computed by the PypeIt MOSFIRE DRP. These files take advantage of the real-time ingestion infrastructure used for raw MOSFIRE files and are ingested into KOA upon completion by the pipeline. Modifications to PypeIt have been contributed by the WMKO team to guarantee compatibility with KOA real-time ingestion.
18.6	29August22	KOA now ingests raw (level 0) NIRES, NIRSPEC, and OSIRIS observations and Quicklook (level 1) and Reduced (level 2) OSIRIS products in near-real time, generally within 5 minutes after acquisition. This completes the real time ingestion of raw (level 0) observations for all active instruments.
18.5	04August22	KOA has released an update to PyKOA, the Python client that now supports download queries for level 1 data for HIRES, LWS, NIRC2, NIRSPEC, and OSIRIS. The code can be installed from the Python Package Index (PyPI) software repository.
18.4	06July22	KOA now ingests raw (level 0) NIRC2 observations and Quicklook (level 1) calibrated products in near-real time, generally within 5 minutes after acquisition. In the coming months, real-time ingestion will be implemented for all active instruments.
18.3	2June22	KOA now ingests raw (level 0 )LRIS observations in near-real time, generally within 5 minutes after acquisition.
18.2	19April22	KOA now ingests raw (level 0) DEIMOS, ESI, HIRES, and MOSFIRE observations in near-real time, generally within 5 minutes after acquisition. In the coming months, real-time ingestion will be implemented for all active instruments. The end-of-night ingestion model now used will be decommissioned. The KOA data access policy remains unchanged, so most users accessing public data will not notice this change. Quicklook (level 1) and science-ready (level 2) reduced products are being computed for DEIMOS by the DEIMOS DRP. These files take advantage of the real-time ingestion infrastructure used for raw DEIMOS files and are ingested into KOA upon completion by the pipeline.
18.1	17February22	KOA now ingests raw (level 0) KCWI observations in near-real time, generally within 5 minutes after acquisition. In the coming months, real-time ingestion will be implemented for all active instruments. The end-of-night ingestion model now used will be decommissioned. The KOA data access policy remains unchanged, so most users accessing public data will not notice this change. Quicklook (level 1) and science-ready (level 2) reduced products are being computed for KCWI by the KCWI DRP. These files take advantage of the real-time ingestion infrastructure used for raw KCWI files and are ingested into KOA upon completion by the pipeline. The W.M. Keck Observatory has instituted a policy change in which calibration files that do not contain any proprietary target information (eg. darks, flats, bias frames) are assigned to engineering (PROGID=ENG) and are available for immediate public release. This change impacts archive searches based only on the Program ID. The calibration files will be made accessible for each instrument as real-time ingestion is deployed.
18.0	14December21	KOA made a minor update to some keyword names in: HIRES FITS headers HIRES TAP metadata Table headers of calibration file lists and PyKOA return products. See HIRES Keywords Updates for more information on the changes to these products.
17.2	30September21	KOA has released an update to PyKOA, the Python client that now supports queries for raw data acquired with the LRIS instrument. The code can be installed from the Python Package Index (PyPI) software repository.
17.1	02September21	KOA has released an update to PyKOA, the Python client that now supports queries for raw data acquired with the LWS and NIRC instruments. The code can be installed from the Python Package Index (PyPI) software repository. Also released is showing the original telescope filename with a one click download on the search results table. The original telescope filename continues to be a download filename option.
16.6	13July21	KOA has released an update to PyKOA, the Python client that now supports queries for raw data acquired with the NIRC2 and NIRSPEC instruments. The code can be installed from the Python Package Index (PyPI) software repository. Access to data acquired with all Keck instruments will be delivered in 2021.
16.5	4June21	KOA has released an update to PyKOA, the Python client that now supports queries for raw data acquired with the MOSFIRE instrument. The code can be installed from the Python Package Index (PyPI) software repository. Access to data acquired with all Keck instruments will be delivered in 2021.
16.4	24May21	KOA has released an update to PyKOA, the Python client that now supports queries for raw data acquired with the KCWI and NIRES instruments. The code can be installed from the Python Package Index (PyPI) software repository. Access to data acquired with all Keck instruments will be delivered in 2021.
16.3	25February21	KOA has released an update to PyKOA, the Python client that now supports queries for raw data acquired with the ESI and OSIRIS instruments. The code can be installed from the Python Package Index (PyPI) software repository.
16.2	08January21	KOA has released an update to PyKOA, the Python client that now supports queries for raw data acquired with the DEIMOS instrument. The code can be installed from the Python Package Index (PyPI) software repository.
16.1.1	05November20	KOA has released KODIAQ Data Release 3, flux calibrated, coadded extracted ESI spectra of 727 quasars (Contributed by the KODIAQ team, data lead John M. O'Meara). O'Meara et al. 2020
16.1	14October20	KOA has released PyKOA, a Python client that supports queries for raw data acquired with the HIRES instrument. The code can be installed from the Python Package Index (PyPI) software repository. Access to data acquired with all the Keck instruments will be delivered throughout Fall 2020 and Winter 2021.
16.0	08June20	The complete, validated metadata for DEIMOS has been released. This allows users to perform DEIMOS searches and return results with wavelength and observing mode constraints.
15.1.1	15April20	The NIRSPEC Search for Gaseous Plumes from Europa dataset has been released. This dataset contains KL and M-wide NIRSPEC spectra of Europa taken over 18 nights between 3 Feb 2016 and 7 May 2017. Contributed by PI (NASA Keck) Lucas Paganini.
15.1	10March20	Release of Telemetry Recording System (TRS) data files that are a record of the state and actions of the adaptive optics (AO) system for NIRC2 beginning with data taken on 18 Aug 2019. TRS Data is available for download from the NIRC2 search results pages.
15.0	12December19	The complete, validated metadata for ESI has been released. This allows users to perform ESI searches with wavelength constraints and presents filter and grating information in the results table.
14.0	10September19	NIRSPEC data taken since the major instrument upgrades in October 2018 are now available to PIs; public access to these data are determined by the data's proprietary periods. Data before and after the upgrade are presented uniformly in KOA, despite some changes in the FITS headers. See: NIRSPEC modes. A small change was made to the handling of dark frames in the calibration association. Since darks are generally not needed for NIRSPEC, all dark frames taken on the same night as science and flat files are returned so users can decide whether to use them in their data reductions.
13.0	29July19	The complete, validated metadata and calibration association for MOSFIRE has been released July 29, 2019. The calibration association service returns the optimum set of calibration files for reduction of raw science files.
12.2.3	30May19	The Keck Sample of Quiescent Galaxies has been released. This data set comprises 167 Keck spectra of high-redshift galaxies. The primary targets are massive quiescent galaxies, but low-mass and/or star-forming objects are also present. Contributed by PI Sirio Belli.
12.2.2	09May19	Interactive weather plots have been released for nights beginning Feb 21, 2019
12.2.1	28Mar19	The Complete Calibration of the Color-Redshift Relation (C3R2) Survey data set has been released. The survey is aimed at providing galaxy redshifts needed for weak lensing cosmology experiments of the 2020s. Contributed by PI (NASA Keck) Daniel Stern.
12.2	03Dec18	First release of Near-Infrared Echellette Spectrometer (NIRES) data. The data from NIRES will become publicly available per the expiration of each program's proprietary period. KOA Data Release Policy.
12.1	09Aug18	ASCII tables of all public observations (updated weekly) are now available for downloading. These tables are useful for offline, multi-object queries. Documentation has been added to help new users familiarize themselves with the services and data provided by KOA.
12	30Nov17	First release of Keck Cosmic Web Imager (KCWI) data. The data from KCWI will become publicly available per the expiration of each program's proprietary period. KOA Data Release Policy.
11.9.3	26July17	Second data release (DR2) from the Keck Observatory Database of Ionized Absorption toward Quasars (KODIAQ) project. This release contains spectra of 130 new QSOs, bringing the total number of KODIAQ objects to 300. The products are reduced, continuum normalized quasar spectra derived from public HIRES raw data served through KOA. Intermediate data extraction products for the DR2 data will be available in Fall 2017. The data are accessible from the KODIAQ search page. Users may download gzipped tar files of the data and the intermediate data products (currently only available for DR1 data), or perform positional searches to discover, visualize, and download the data sets.
11.9.2	30May17	Release of browse-quality spectra extracted with a new, automated pipeline from 1,821 nights of NIRSPEC high-dispersion data. The pipeline is written in Python, is available at https://tinyurl.com/nsdrp-code and documented at https://tinyurl.com/koa-nsdrp. The Moving Object Search Service now includes orbital element input for searches of new asteroids and comets.
11.9.1	21Feb17	Release of complete, validated metadata and calibration association for LRIS. The calibration association service returns the optimum set of calibration files for reduction of raw science files.
11.9	19Dec16	Release of the Moving Object Search Service (MOSS), a web interface that supports searches of KOA in time and space for observations of known solar system objects. The service uses the SPICE tools maintained by NASA's Navigation and Ancillary Information Facility to compute ephemerides of Solar System objects.
11.8.3	15Mar16	FITS header viewer option added to the quicklook column on the results pages. Also released are minor updates and bug fixes.
11.8.2	16Feb16	Interactive viewers for OSIRIS Reduced Data Cubes and NIRC2 Calibrated Images. Date constraints for program searches in the programs pages One-click downloads of level 1 FITS files on the quicklook pages for OSIRIS, NIRC2, and LWS.
11.8.1	28Sep15	First public release of LWS data (1998-2005)
11.8	31Aug15	Users can now choose to retrieve files from the archive with their telescope-assigned filenames. Forgotten password reset ADS bibcodes (shown on the Released Programs tab) Direct links to OSIRIS rectification matrices from the download package page
11.7.4	18Aug15	First release of a program interface for use in scripts or from the command line that provides access to public imaging data from all instruments equipped with an imaging mode. The interface uses a common syntax across all instruments and is compliant with Virtual Observatory standards.
11.7.3	06Jul15	First public release of NIRC data (1995-2010)
11.7.2	15Jun15	Download package organization has been changed; please see User Guide for details Basic Search form now includes the option to search by TARGNAME
11.7.1	15May15	First data release of spectra of 170 QSOs from the Keck Observatory Database of Ionized Absorption toward Quasars (KODIAQ) project. The spectra are reduced, continuum normalized quasar spectra derived from public HIRES raw data served through KOA. Intermediate data extraction products are also provided. The data are accessible from a dedicated landing page for KODIAQ. Users may download gripped tar files of the data and the intermediate data products, or perform positional searches to discover, visualize and download the data sets.
11.7	19Dec14	First public release of OSIRIS data (2005 - 2014). These data products contain complete sets of metadata for level 0 images, including WCS information derived by KOA; and level 1 browse products derived from the public OSIRIS pipeline, automated by KOA. Finally, the search engine returns the optimum set of calibration files for reduction of raw science files.
11.6	24Sep14	First release of LWS data (1998 - 2005). The data from LWS will be accessible only to PI's until September 2015 at the earliest. Also released are minor updates and bug fixes.
11.5.1	07Aug14	Minor bug fixes to correct behavior when special characters are included in some input fields: "+" in Object Name and single quotes in a Program Title are now handled properly.
11.5	02Jul14	First release of NIRC data (1995 - 2010). The data from NIRC will be accessible only to PI's until December 2014 at the earliest. First public release of ESI data (1999 - 2014).
11.4.2	01Apr14	First public release of DEIMOS data (2002 - 2014).
11.4.1	29Jan14	First public release of MOSFIRE data (2012 - 2014).
11.4	18Dec13	First release of OSIRIS data (2005 - 2013). The data from OSIRIS will be accessible only to PI's until December 2014 at the earliest. Also released is a portal summarizing Contributed Datasets.
11.3.2	30Sep13	First public release of LRIS data (1994 - 2013).
11.3.1	30Jul13	Minor updates to the User Interface.
11.3	02Jul13	First release of ESI data (1999 - 2013). The data from ESI will be accessible only to PI's until July 2014 at the earliest.
11.2	19Mar13	First release of DEIMOS data (2002 - 2013). The data from DEIMOS will be accessible only to PI's until April 2014 at the earliest.
11.1	28Jan13	First release of MOSFIRE data (2012 - 2013). The data from MOSFIRE will be accessible only to PI's until January 2014 at the earliest. Houses data from the Keck Interferometer.
11.0	02Oct12	First release of LRIS data (1994 - 2012). The data from LRIS will be accessible only to PI's until September 2013 at the earliest. New interactive return display for the Released and My Programs pages.
10.0	03May12	First release of NIRC2 data (2001 - 2012) New interactive data return display
9.2	14Nov11	Improvements to estimation of download package size Each tarball now contains up to 200 MB in files, rather than being limited to 20 files of any any size
9.1.1	31Oct11	Minor updates and bug fixes
9.1	31Aug11	New interactive plotting tool for HIRES extracted spectra Minor bug fixes
9.0	13Jul11	Database optimization Minor bug fixes
8.1.1	07Mar11	KOA now archives weather data from several sources for each night
8.1	15Oct10	Added Principal Investigator Interface Added links to external weather data archive Minor bug fixes
8.0	17May10	First release of NIRSPEC data (2000-2010)
7.0	09Nov09	Added Basic Search capability (search by date or location) with option to show or package all results Minor bug fixes
6.1	12Aug09	Added extracted spectra for legacy (single-chip) data Improved error messaging and search suggestions when no results are available
6.0	15Oct08	Added multiple object search capability (table upload) Search goes into background mode to prevent timeouts
5.1	01Aug08	Results page includes links to previews of extracted spectra Option to include extracted spectra in download packaging Extracted spectra previews include QA reports
5.0	15Mar08	First release of 1-chip "legacy" data (2001 through 2004) Update to download packaging: preview images of raw data included in tarballs
4.1.1	04Jun07	Updates to calibration association: Pre-build calibration lists to speed up user interface Stop searching for calibration files beyond the same date of observation as the science file, if enough of each calibration type is found. If not, keep looking up to 3 days out for enough fles.
4.1	27Nov06	User interface search page updated: Added ability to search by SNR Give user choice of whether to resolve objects first through NED or SIMBAD Results and download pages updated: Report Decker Name on output page Provide user with a `wget` shell script to retrieve all their tarballs Improved error reporting on tarball download page Minor improvements to ancillary data search algorithm Documentation updates: building GET requests, Co-I access
4.0.4	28Sep06	Minor bug fix when calibration files (but no science files) are found.
4.0.3	17Jul06	Re-worded Spatial/TARNGNAME search fields on user interface Added link to list of publicly available data Anonymous access enabled
4.0.2	10May06	User interface search page updated: Spatial and Name-based searches separated Added flexibility in searching by image type Date inputs accept more flexible formats Utility added for users to change their passwords Access to ancillary weather data Search results contain links to JPEG Quicklook images of each CCD Users retrieve tarballs from a download page, with links to file lists, expiration date, and other useful information Instructions rearranged on download page for science with associated calibrations. User's query parameters printed on error page when no files are found Bug fixes from internal testing of v4.0
3.1.3	22Jun05	Implemented per-CCD proprietary period Show number of available CCDs Remove direct links to FITS images; all links are indirect via getHIRES or KOADownload, which perform all necessary proprietary/login checks Allow search radius of 0 if no object name is provided Minor cosmetic updates to results page Minor bug fixes in error checking
2.8.3	04Feb05	Bug fix: return page when no files are found
2.8.2	02Feb05	Bug fix: TARGNAME/OBJECT logic Added new PROGINST value: Gemini Bug fix: login error checking
2.8.1	04Nov04	Bug fix: broken link for Image Type documentation
2.8	15Oct04	Science Files only is now default image type selection; added warning about browser time-out problems when searching for "Science and Associated Calibration Files" Bug fix: corrected drop-down menu listing value for Caltech Added FRAMENO search option Exposure time searches now use ELAPTIME instead of EXPTIME keyword
2.7	16Sep04	Bug fix: correction to SQL queries when searching on EXPTIME and DATE_OBS Search by TARGNAME instead of OBJECT for name-based searches Bug fix: formatting of displayed DEC values
2.6	02Sep04	Bug fix: check for blank search radius
2.5	30Aug04	Added new keyword to describe readout quality (ROQUAL); if "Bad" output row is highlighted red UI output displays TARGNAME instead of OBJECT keyword
2.4	16Aug04	Corrected RA/DEC formats
2.3	13Aug04	Made SEMID search case-insensitive Search results sort by KOAID Display Equinox underneath RA and DEC header column headers
2.2	26Jul04	Minor code improvements and bug fixes
2.1	21Jul04	Bug Fixes: Don't include duplicates of calibration files in download packages Read login information from cookies Keep working files in HIRES subdirectory of user's workspace
2.0	15Jul04	Added login functionality Minor bug fixes
1.0	02Mar04	Initial release

Please acknowledge the use of KOA by including this text in your publications:

This research has made use of the Keck Observatory Archive (KOA), which is operated by the W. M. Keck Observatory and the NASA Exoplanet Science Institute (NExScI), under contract with the National Aeronautics and Space Administration.

Please also acknowledge the PI(s) of datasets that have been obtained through KOA, and please contact the KOA Help Desk if you publish archival data.

If your research uses data reduced by the DEIMOS, KCWI, MOSFIRE, or NIRES PypeIt DRP, please use the PypeIt Citation.

If your research uses data reduced by the KPF DRP, please use the citation as described in the README.md.

The Keck Observatory Archive (KOA) is a collaboration between the NASA Exoplanet Science Institute (NExScI) and the W. M. Keck Observatory (WMKO). NExScI is sponsored by NASA's Exoplanet Exploration Program, and operated by the California Institute of Technology in coordination with the Jet Propulsion Laboratory (JPL).

Caltech IPAC: W. M. Keck Observatory: NExScI: