1. Keck Planet Finder: preliminary design
- Author
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David Cowley, William Deich, Mavourneen Wilcox, Martin M. Sirk, Julian Stuermer, Tim Miller, Tobias Feger, Marie Weisfeiler, Andrew W. Howard, Peter Wizinowich, Michael Raffanti, Kodi Rider, Steven R. Gibson, Steve Milner, Edward H. Wishnow, Christopher D. Smith, Adam Vandenberg, Tom Payne, Y. V. Gurevich, Ean James, Christian Schwab, Kyle Lanclos, Roger Smith, Constance M. Rockosi, David W. Coutts, Jason C. Y. Chin, Arpita Roy, Samuel Halverson, M. Kassis, Yuzo Ishikawa, Elisha Jhoti, Jerry Edelstein, Daniel Finstad, Dale Sandford, James Curtis, Steve Allen, Scott Lilley, Andreas Seifahrt, Evans, Christopher J., Simard, Luc, and Takami, Hideki
- Subjects
Physics ,Spectrometer ,Doppler spectroscopy ,business.industry ,Zerodur ,01 natural sciences ,7. Clean energy ,Exoplanet ,Collimated light ,010309 optics ,Radial velocity ,Optics ,Observatory ,Planet ,0103 physical sciences ,business ,010303 astronomy & astrophysics - Abstract
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.
- Published
- 2018
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