NExScI Science Data Archives

• The Keck Observatory Archive (KOA)
  The W. M. Keck Observatory Archive (KOA) serves level 0 (uncalibrated) and 1 observations made with both the current CCD on the High Resolution Echelle Spectrograph (HIRES) instrument, as well as the pre-upgrade (2004) single-chip data. Currently, data on approximately 2500 scientific objects are available to the public. In May 2010, data acquired with the Near InfraRed echelle SPECtrograph (NIRSPEC) were also added to the KOA archive. KOA is a collaboration between NASA, NExScI, and the W. M. Keck Observatory.
  
  
• Keck Interferometer data archive
  Data from the Keck Interferometer are available via the Keck Observatory Archive. KI data format and calibration package instructions are available on the KI Support page.
  
  
• The NASA Exoplanet Archive
  The NASA Exoplanet Archive serves the user community working with exoplanet data, primarily transit data sets from Kepler and CoRoT, by providing long-term data curation and analysis tools.
  
  
• The Palomar Testbed Interferometer (PTI) archive
  PTI was built as a testbed for the Keck Interferometer but has also been operational as a science instrument since 1997. Data from over 1000 astronomical sources are available for download here here. The data format and calibration package instructions are available on the PTI Support page.