Keck Planet Finder: preliminary design

Steven R. Gibson*, Andrew W. Howard, Arpita Roy, Christopher Smith, Sam Halverson, Jerry Edelstein, Marc Kassis, Edward H. Wishnow, Michael Raffanti, Steve Allen, Jason Chin, David Coutts, David Cowley, Jim Curtis, William Deich, Tobias Feger, Daniel Finstad, Yulia Gurevich, Yuzo Ishikawa, Ean JamesElisha Jhoti, Kyle Lanclos, Scott Lilley, Tim Miller, Steve Milner, Tom Payne, Kodi Rider, Constance Rockosi, Dale Sandford, Christian Schwab, Andreas Seifahrt, Martin M. Sirk, Roger Smith, Julian Stuermer, Marie Weisfeiler, Mavourneen Wilcox, Adam Vandenberg, Peter Wizinowich

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference proceeding contributionpeer-review

6 Citations (Scopus)
97 Downloads (Pure)


The Keck Planet Finder (KPF) is a fiber-fed, high-resolution, high-stability spectrometer in development for the W.M. Keck Observatory. The instrument recently passed its preliminary design review and is currently in the detailed design phase. KPF is designed to characterize exoplanets using Doppler spectroscopy with a single measurement precision of 0.5 m s-1 or better; however, its resolution and stability will enable a wide variety of other astrophysical pursuits. KPF will have a 200 mm collimated beam diameter and a resolving power greater than 80,000. The design includes a green channel (445 nm to 600 nm) and red channel (600 nm to 870 nm). A novel design aspect of KPF is the use of a Zerodur optical bench, and Zerodur optics with integral mounts, to provide stability against thermal expansion and contraction effects.

Original languageEnglish
Title of host publicationGround-based and Airborne Instrumentation for Astronomy VII
EditorsChristopher J. Evans, Luc Simard, Hideki Takami
Place of PublicationBellingham, Washington
Number of pages20
ISBN (Electronic)9781510619586
ISBN (Print)9781510619579
Publication statusPublished - 6 Jul 2018
EventGround-based and Airborne Instrumentation for Astronomy VII 2018 - Austin, United States
Duration: 10 Jun 201814 Jun 2018

Publication series

NameProceedings of SPIE
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X


ConferenceGround-based and Airborne Instrumentation for Astronomy VII 2018
CountryUnited States

Bibliographical note

Copyright 2018 Society of Photo-Optical Instrumentation Engineers (SPIE). One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.


  • Doppler spectroscopy
  • exoplanets
  • radial velocity
  • Spectrometer
  • Zerodur


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