HIRES Precision RV Pipeline ver. 2.0 Release

NExScI, in collaboration with Caltech and the 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 (KOA) that were taken in the proper configuration and a user must install a small python package on their location machine. The python package is used 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.

To get started, please read the complete Documentation for the HIRES Radial Velocity Processing Environment

Acknowledgement: An important part of this project is recognizing the 25+ years of work by many people who developed and tuned the Doppler pipeline including Paul Butler, Geoff Marcy, Jeff Valenti, Steve Vogt, Debra Fischer, Andrew Howard, Jason Wright, John Johnson, Chris McCarthy, Eric Williams, Howard Isaacson, and BJ Fulton.


  • Marcy, G. W., and Butler, R. P. 1992, Pub. Astr. Soc Pac, 104, 270
  • Butler, R. P., Marcy, G. W., Williams, E., McCarthy, C., Dosanjh, P. and Vogt, S. S.. 1996, Pub. Astr.Soc Pac, 108, 500
  • Howard, Andrew W.; Johnson, John Asher; Marcy, Geoffrey W.; Fischer, Debra A.; Wright, Jason T.; Bernat, David; Henry, Gregory W.; Peek, Kathryn M. G.; Isaacson, Howard; Apps, Kevin; Endl, Michael; Cochran, William D.; Valenti, Jeff A.; Anderson, Jay; Piskunov, Nikolai E. The Astrophysical Journal, Volume 721, Issue 2, pp. 1467-1481 (2010)