A UV double pass spectrograph for monitoring stellar activity for the Keck Planet Finder

Ashley D. Baker; Steven R. Gibson; Jason Grillo; Yuzo Ishikawa; Andrew Howard; Samuel Halverson; Kodi Rider; Sharon Jelinsky; William Deich; Martin M. Sirk; Howard Isaacson; Arpita Roy; Jerry Edelstein; Christopher Smith

doi:10.1117/12.2628149

29 August 2022 A UV double pass spectrograph for monitoring stellar activity for the Keck Planet Finder

Ashley D. Baker, Steven R. Gibson, Jason Grillo, Yuzo Ishikawa, Andrew Howard, Samuel Halverson, Kodi Rider, Sharon Jelinsky, William Deich, Martin M. Sirk, Howard Isaacson, Arpita Roy, Jerry Edelstein, Christopher Smith

Author Affiliations +

Proceedings Volume 12184, Ground-based and Airborne Instrumentation for Astronomy IX; 121845H (2022) https://doi.org/10.1117/12.2628149
Event: SPIE Astronomical Telescopes + Instrumentation, 2022, Montréal, Québec, Canada

Conference Poster

Abstract

We present a compact, double-pass cross-dispersed echelle spectrograph that is tailored specifically to cover the 383 nm to 403 nm spectral range and record R∼16,000 spectra of the stellar chromospheric Ca II H and K lines. This ‘H and K’ spectrometer was developed as a subsystem of the Keck Planet Finder (KPF), which is an extremely precise optical (440 - 870 nm) radial velocity spectrograph for Keck I, scheduled for commissioning Fall 2022, with the science objective of measuring precise masses of exoplanets. The H and K spectrometer will observe simultaneously with KPF to independently track the chromospheric activity of the host stars that KPF observes, which is expected to dominate the KPF measurement floor over long timescales. The H and K Spectrometer is fiber fed from the KPF fiber injection unit with total throughput of 4-7% (top of telescope to CCD) over its operating spectral range. Here we detail the optical design trade offs, mechanical design, and first results from alignment and integration testing.

Citation Download Citation

Ashley D. Baker, Steven R. Gibson, Jason Grillo, Yuzo Ishikawa, Andrew Howard, Samuel Halverson, Kodi Rider, Sharon Jelinsky, William Deich, Martin M. Sirk, Howard Isaacson, Arpita Roy, Jerry Edelstein, and Christopher Smith "A UV double pass spectrograph for monitoring stellar activity for the Keck Planet Finder", Proc. SPIE 12184, Ground-based and Airborne Instrumentation for Astronomy IX, 121845H (29 August 2022); https://doi.org/10.1117/12.2628149

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available