Data Release Policy

The default proprietary period for all data is 18 months from the date of observation.
Non-default proprietary options which may be requested (along with a science-based justification) include the following:
- A period lesser or greater than 18 months for any given observing night allocated within a semester.
- Separate proprietary periods for the individual HIRES CCDs. These periods may each be either the default 18 months or a different period.
- 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
  - Proprietary period per HIRES CCD
- KOA will place the release date for each data set in the metadata associated with the data set at the time of data ingest.
- In the absence of any specific proprietary request associated with an observing proposal, KOA will assign to the data from all three CCDs a release date corresponding to the default proprietary period of 18 months from the date of observation.
- 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.

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).

+ Getting Started + KOA Search Form + Python API + KI Search Form + Publicly Available Data + Contributed Datasets + KOA User Guide + Image API + Reducing Keck Data + KOA Helpdesk + KOA News + KOA Bibliography + Related Archives + Login / Logout	Data Release Policy The default proprietary period for all data is 18 months from the date of observation. Non-default proprietary options which may be requested (along with a science-based justification) include the following: A period lesser or greater than 18 months for any given observing night allocated within a semester. Separate proprietary periods for the individual HIRES CCDs. These periods may each be either the default 18 months or a different period. 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 Proprietary period per HIRES CCD KOA will place the release date for each data set in the metadata associated with the data set at the time of data ingest. In the absence of any specific proprietary request associated with an observing proposal, KOA will assign to the data from all three CCDs a release date corresponding to the default proprietary period of 18 months from the date of observation. 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. 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