Keck Planet Finder: Design Updates

Steven R. Gibson,Andrew W. Howard, Kodi Rider,Arpita Roy,Jerry Edelstein,Marc Kassis,Jason Grillo,Samuel P. Halverson,Martin M. Sirk,Christopher Smith, Steve Allen,Ashley Baker,Charles Beichman,Bruce Berriman, Thomas Brown, Kelleen Casey,Jason Chin,David W. Coutts,David Cowley,William Deich,Tobias Feger,Benjamin Fulton,Luke Gers,Yulia Gurevich,Yuzo Ishikawa, Ean James,Sharon Jelinsky, Stephen Kaye,Kyle Lanclos, Adela Li,Scott Lilley, Ben McCarney, Tim Miller, Steve Milner, Timothy J. O'Hanlon,Jacob Pember, Mike Raffanti,Constance Rockosi,Ryan Rubenzahl, Dave Rumph, Dale Sandford, Maureen Savage,Christian Schwab,Andreas Seifahrt, Abby Shaum,Roger M. Smith,Julian Stuermer,Jim Thorne,Adam Vandenberg, Tod Von Boeckmann, Cindy Wang, Qifan Wang,Marie Weisfeiler, Mavourneen Wilcox,Edward H. Wishnow,Peter Wizinowich,Truman Wold, Anna Wolfenberger

GROUND-BASED AND AIRBORNE INSTRUMENTATION FOR ASTRONOMY VIII（2020）

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Abstract

The Keck Planet Finder (KPF) is a fiber-fed, high-resolution, high-stability spectrometer in development at the UC Berkeley Space Sciences Laboratory for the W.M. Keck Observatory. KPF is designed to characterize exoplanets via Doppler spectroscopy with a goal of a single measurement precision of 0.3 m s(-1) or better, however its resolution and stability will enable a wide variety of astrophysical pursuits. Here we provide post-preliminary design review design updates for several subsystems, including: the main spectrometer, the fabrication of the Zerodur optical bench; the data reduction pipeline; fiber agitator; fiber cable design; fiber scrambler; VPH testing results and the exposure meter.

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Key words

Spectrometer, exoplanets, Doppler spectroscopy, radial velocity, Zerodur

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