Share Email Print
cover

Proceedings Paper

Green astro-comb for HARPS-N
Author(s): Nicholas Langellier; Chih-Hao Li; Alexander G. Glenday; Guoqing Chang; Hung-Wen Chen; Jinkang Lim; Gabor Furesz; Franz Kärtner; David F. Phillips; Dimitar Sasselov; Andrew Szentgyorgyi; Ronald Walsworth
Format Member Price Non-Member Price
PDF $14.40 $18.00

Paper Abstract

We report the design, installation and testing of a broadband green astro-comb on the HARPS-N spectrograph at the TNG telescope. The astro-comb consists of over 7000 narrow lines (<10-6 nm width) spaced by 16 GHz (0.02 nm at 550 nm) with wavelengths stabilized to the Global Positioning System (GPS) and with flat power from 500 to 620 nm. The narrow lines are used to calibrate the spectrograph and measure its line profile. The short term sensitivity of HARPS-N is measured to be less than 2 cm/s and the long-term drift of the spectrograph is approximately 10 cm/s/day. The astrocomb has been partially automated with future work planned to turn the astro-comb into a fully automated, push button instrument.

Paper Details

Date Published: 28 July 2014
PDF: 9 pages
Proc. SPIE 9147, Ground-based and Airborne Instrumentation for Astronomy V, 91478N (28 July 2014); doi: 10.1117/12.2056548
Show Author Affiliations
Nicholas Langellier, Harvard Univ. (United States)
Chih-Hao Li, Harvard-Smithsonian Ctr. for Astrophysics (United States)
Alexander G. Glenday, Harvard-Smithsonian Ctr. for Astrophysics (United States)
Guoqing Chang, Massachusetts Institute of Technology (United States)
Hamburg Univ. (Germany)
Hung-Wen Chen, Massachusetts Institute of Technology (United States)
Jinkang Lim, Massachusetts Institute of Technology (United States)
Gabor Furesz, Harvard-Smithsonian Ctr. for Astrophysics (United States)
Franz Kärtner, Massachusetts Institute of Technology (United States)
Hamburg Univ. (Germany)
David F. Phillips, Harvard-Smithsonian Ctr. for Astrophysics (United States)
Dimitar Sasselov, Harvard Univ. (United States)
Harvard-Smithsonian Ctr. for Astrophysics (United States)
Andrew Szentgyorgyi, Harvard-Smithsonian Ctr. for Astrophysics (United States)
Ronald Walsworth, Harvard Univ. (United States)
Harvard-Smithsonian Ctr. for Astrophysics (United States)


Published in SPIE Proceedings Vol. 9147:
Ground-based and Airborne Instrumentation for Astronomy V
Suzanne K. Ramsay; Ian S. McLean; Hideki Takami, Editor(s)

© SPIE. Terms of Use
Back to Top