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

    11 Citations (Scopus)
    127 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
    Country/TerritoryUnited 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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