NExScI Data Archives

• Exoplanet Follow-up Observing Program The Exoplanet Follow-up Observing Program (ExoFOP) website is designed to optimize resources and facilitate collaboration in follow-up studies of exoplanet candidates. ExoFOP serves as a repository for community-gathered follow-up data by allowing upload and display of data and derived astrophysical parameters.
• HIRES Radial Velocity Processing Environment NExScI, in collaboration with Caltech and the W. M. Keck Observatory, is providing access to a processing environment suitable for producing precision radial velocities for HIRES data that have been acquired in a specific manner. The processing environment runs on servers at NExScI and is accessible through python web services calls, which the user runs on their own client-side machines. The precision radial velocity code is not available to download and is otherwise not visible to the users. To use this service, a user must have PI HIRES data in the Keck Observatory Archive that were taken in the proper configuration and a user must install a small python package on their local machine. The python package is utilized to log on to the service, download data from the archive to the server-side processing environment, invoke the reduction and processing of the data, and extract the precision radial velocity results.
• Keck Interferometer Data Archive Data from the Keck Interferometer (KI) are available via the Keck Observatory Archive. KI data format and calibration package instructions are available on the KI Support Page.
• The Keck Observatory Archive The Keck Observatory Archive (KOA) serves raw (level 0) science and calibration data acquired with all active and decommissioned instruments. The archive serves all data acquired since the observatory saw first light in 1994, and newly acquired data are ingested nightly. KOA serves calibrated (level 1) browse products for the HIRES, NIRC2, OSIRIS and LWS instruments. KOA is a collaboration between NASA, NExScI, and the W. M. Keck Observatory.
• Large Binocular Telescope Interferometer Data Archive The LBTI archive at NExScI contains all NASA data obtained by the Large Binocular Telescope Interferometer, a NASA-funded instrument built and operated by the University of Arizona to study exoplanet systems. Learn more about LBTI here and explore the LBTI Data Archive here.
• The NASA Exoplanet Archive The NASA Exoplanet Archive serves the user community working with exoplanet data by providing long-term data curation and analysis tools.
• NEID Archive NEID is an astronomical spectrograph designed to detect and measure masses of exoplanets using the Doppler technique. The instrument was funded by the NASA-NSF Exoplanet Observational Research (NN-EXPLORE) program to be designed and built by the Pennsylvania State University.
• 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 and supporting information are available for download here.

NExScI Software Tools

NExScI provides software tools for use in observation planning and data reduction for supported missions and facilties. This software was developed for direct support of the Keck Interferometer and Palomar Testbed Interferometer; however, it might also be useful to other investigators.

(last updated March 5th, 2025 15:14:07)