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Proceedings Paper

Precision radial velocities with inexpensive compact spectrographs
Author(s): Christopher H. Betters; Alex Murray; Joss Bland-Hawthorn; Sergio G. Leon-Saval
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Paper Abstract

High-precision astronomical spectrographs routinely employed to detect planets via the radial velocity method are generally large and expensive instruments. We present our progress developing a compact spectrograph using commercial ‘off-the-shelf’ components that can achieve similar precision at a fraction of the cost. The spectrograph, PIMMS Visible, has a resolving power of R-50,000 operating in the visible regime. We are able to obtain RMS velocity precisions of better than ~1 m/s by calibrating with a stabilised single-mode etalon. As a technology proof we attempt to detect the solar 5- minute period p-mode oscillations (a few m/s signal).

Paper Details

Date Published: 4 August 2016
PDF: 8 pages
Proc. SPIE 9908, Ground-based and Airborne Instrumentation for Astronomy VI, 99081B (4 August 2016); doi: 10.1117/12.2232126
Show Author Affiliations
Christopher H. Betters, The Univ. of Sydney (Australia)
Alex Murray, The Univ. of Sydney (Australia)
Joss Bland-Hawthorn, The Univ. of Sydney (Australia)
Sergio G. Leon-Saval, The Univ. of Sydney (Australia)

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

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