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.  KOA is a collaboration between NASA, NExScI, and the W. M. Keck Observatory.
  
  
• The Keck Interferometer archive
  Data from the Keck Interferometer are available to PIs and the public through a searchable database of instrument calibrated and averaged data. The data format and calibration package instructions are available on the KI Support page.
  
  
• 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 to PIs and the public through a searchable database of instrument calibrated and averaged data. The data format and calibration package instructions are available on the PTI Support page.
  
  
• The NASA Star and Exoplanet Database (NStED) archive
  The NASA/IPAC/NExScI Star and Exoplanet Database (NStED) is a general purpose stellar and exoplanet archive to support NASA's planet finding and characterization activities. NStED is a collaborative effort between the NStED group, IRSA, IPAC, and the NExScI.