Share Email Print
cover

Proceedings Paper

First light of a laser frequency comb at SALT
Author(s): Éric Depagne; Richard A. McCracken; Derryck T. Reid; Rudi B. Kuhn; Nicolas Erasmus; Lisa A. Crause
Format Member Price Non-Member Price
PDF $14.40 $18.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

We present preliminary results of the commissioning and testing of SALT-CRISP (SALT-Calibration Ruler for Increased Spectrograph Precision), a Laser Frequency Comb (LFC) built by Heriot-Watt University and temporarily installed at the Southern African Large Telescope (SALT). The comb feeds the High Stability mode of SALT's High Resolution Spectrograph (HRS) and fully covers the wavelength range of the red channel of the HRS: 555-890 nm. The LFC provides significantly improved wavelength calibration compared to a standard Thorium-Argon (ThAr) lamp and hence offers unprecedented opportunities to characterise the resolution, stability and radial velocity precision of the HRS. Results from this field trial will be incorporated into subsequent LFC designs.

Paper Details

Date Published: 9 August 2016
PDF: 7 pages
Proc. SPIE 9908, Ground-based and Airborne Instrumentation for Astronomy VI, 99087M (9 August 2016); doi: 10.1117/12.2245048
Show Author Affiliations
Éric Depagne, South African Large Telescope (South Africa)
South African Astronomical Observatory (South Africa)
Richard A. McCracken, Heriot-Watt Univ. (United Kingdom)
Derryck T. Reid, Heriot-Watt Univ. (United Kingdom)
Rudi B. Kuhn, South African Astronomical Observatory (South Africa)
Nicolas Erasmus, South African Astronomical Observatory (South Africa)
Lisa A. Crause, South African Astronomical Observatory (South Africa)


Published in SPIE Proceedings Vol. 9908:
Ground-based and Airborne Instrumentation for Astronomy VI
Christopher J. Evans; Luc Simard; Hideki Takami, Editor(s)

© SPIE. Terms of Use
Back to Top