Keck Planet Finder: design updates
Steven R. Gibson, Andrew W. Howard, Kodi Rider, Arpita Roy, Jerry Edelstein, Marc Kassis, Jason Grillo, Samuel Halverson, Martin M. Sirk, Chris Smith, S. L. Allen, Ashley Baker, Charles Beichman, G. Bruce Berriman, T. M. Brown, Kelleen Casey, Jason Chin, David W. Coutts, David Cowley, William Deich, Tobias Feger, Benjamin J. Fulton, Luke Gers, Yulia V. Gurevich, Yuzo Ishikawa, Ean James, Sharon R. Jelinsky, Stephen Kaye, Kyle Lanclos, Adela Li, Scott Lilley, Ben McCarney, Tim Miller, Steve Milner, Timothy J. O’Hanlon, Jacob Pember, Mike Raffanti, Constance M. Rockosi, Ryan A. Rubenzahl, Dave Rumph, Dale Sandford, Maureen L. Savage, Christian Schwab, Andreas Seifahrt, Abby P. Shaum, Roger M. Smith, Julian Stuermer, J. R. Thorne, Adam Vandenberg, Tod Von Boeckmann, Cindy Wang, Qifan Wang, Marie Weisfeiler, M. K. Wilcox, Edward Wishnow, Peter Wizinowich, T. Wold, Anna Wolfenberger
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<sup>-1</sup> 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.