Data Release Policy

The default proprietary period for data obtained through the 2022B semester is 18 months. Starting in 2023A, the default proprietary period for only NASA Keck data is 12 months; the proprietary periods for date from the other Keck partners remains 18months.
Non-default proprietary options which may be requested (along with a science-based justification) include the following:
- A period lesser or greater than the default proprietary period for any given observing night allocated within a semester.
- All proprietary periods are specified with respect to the date of observation.
If a non-default proprietary period is desired, the following procedure must be followed:
- The PI must submit to the TAC, along with the observing proposal, the requested non-default proprietary options for each observing night requested. The non-default proprietary options must be justified on the basis of the science investigation.
- Each institution contributing to the KOA (Caltech, Univ. of California, NASA, and Univ. of Hawaii) will select one person to act as a "selecting official" for final approval of changes to the default proprietary period.
- If recommended by the TAC and approved by the selecting official, the following information will be submitted by the selecting official to KOA at the time of selection:
  - Proposal id
  - Proprietary period per assigned night
- KOA will place the release date for each data set in the metadata associated with the data set at the time of data ingest.
- Upon the first release of any science data within a night or program, all of the calibration files for that program also become public.
This procedure applies to each semester in which a non-default proprietary option is requested. Data acquired in separate observing semesters require separate non-default proprietary option requests, with the associated scientific justification.

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 DRP or MOSFIRE DRP, please use the PypeIt Citation.

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).

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+ Getting Started + KOA Search Form + KOA and Python + KI Search Form + Publicly Available Data + Contributed Datasets + KOA User Guide + Image API + Reducing Keck Data + KOA Helpdesk + KOA News + Related Archives + Login / Logout	Data Release Policy The default proprietary period for data obtained through the 2022B semester is 18 months. Starting in 2023A, the default proprietary period for only NASA Keck data is 12 months; the proprietary periods for date from the other Keck partners remains 18months. Non-default proprietary options which may be requested (along with a science-based justification) include the following: A period lesser or greater than the default proprietary period for any given observing night allocated within a semester. All proprietary periods are specified with respect to the date of observation. If a non-default proprietary period is desired, the following procedure must be followed: The PI must submit to the TAC, along with the observing proposal, the requested non-default proprietary options for each observing night requested. The non-default proprietary options must be justified on the basis of the science investigation. Each institution contributing to the KOA (Caltech, Univ. of California, NASA, and Univ. of Hawaii) will select one person to act as a "selecting official" for final approval of changes to the default proprietary period. If recommended by the TAC and approved by the selecting official, the following information will be submitted by the selecting official to KOA at the time of selection: Proposal id Proprietary period per assigned night KOA will place the release date for each data set in the metadata associated with the data set at the time of data ingest. Upon the first release of any science data within a night or program, all of the calibration files for that program also become public. This procedure applies to each semester in which a non-default proprietary option is requested. Data acquired in separate observing semesters require separate non-default proprietary option requests, with the associated scientific justification.

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 DRP or MOSFIRE DRP, please use the PypeIt Citation. Privacy Policy Image Use Policy 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). KOA WMKO \#koashare.html\