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NRES: the network of robotic echelle spectrographs
Author(s): Robert J. Siverd; Timothy M. Brown; Stuart Barnes; Mark K. Bowman; Jon De Vera; Stephen Foale; Daniel-Rolf Harbeck; Todd Henderson; John Hygelund; Annie Kirby; Curtis McCully; Jon S. Nation; Cary Smith; Brook Taylor; Joseph R. Tufts
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Paper Abstract

Las Cumbres Observatory Global Telescope Network (LCOGT) has built the Network of Robotic Echelle Spectrographs (NRES), consisting of four identical, high-resolution optical spectrographs, each fiber-fed simultaneously by up to two 1-meter telescopes and a calibration source. Two units have been installed and are currently executing scientific observations. A third unit has been installed and is presently in commissioning. A fourth unit has been shipped to site and will be installed in mid 2018. Operating on four separate continents in both the Northern and Southern hemispheres, these instruments comprise a globally-distributed, autonomous spectrograph facility for stellar classification and high-precision radial velocity of bright stars. Simulations suggest we will achieve long-term radial velocity precision of 3 m/s in less than an hour for stars with V < 12. Radial velocity precision of 75 m/s has already been demonstrated with our automatic data-processing pipeline across multiple sites. Work is ongoing to improve several NRES system components including telescope control (robotic source acquisition in particular) and the data-processing pipeline. In this document we briefly overview the NRES design, its purpose and goals, results achieved to date in the field, and the ongoing development effort to improve instrument performance.

Paper Details

Date Published: 6 July 2018
PDF: 12 pages
Proc. SPIE 10702, Ground-based and Airborne Instrumentation for Astronomy VII, 107026C (6 July 2018); doi: 10.1117/12.2312800
Show Author Affiliations
Robert J. Siverd, Las Cumbres Observatory Global Telescope Network (United States)
Timothy M. Brown, Las Cumbres Observatory Global Telescope Network (United States)
Stuart Barnes, Stuart Barnes Optical Design (Netherlands)
Mark K. Bowman, Las Cumbres Observatory Global Telescope Network (United States)
Jon De Vera, Las Cumbres Observatory Global Telescope Network (United States)
Stephen Foale, Las Cumbres Observatory Global Telescope Network (United Kingdom)
Daniel-Rolf Harbeck, Las Cumbres Observatory Global Telescope Network (United States)
Todd Henderson, Las Cumbres Observatory Global Telescope Network (United States)
John Hygelund, Arthrex California Technology, Inc. (United States)
Annie Kirby, Las Cumbres Observatory Global Telescope Network (United States)
Curtis McCully, Las Cumbres Observatory Global Telescope Network (United States)
Jon S. Nation, Las Cumbres Observatory Global Telescope Network (United States)
Cary Smith, Las Cumbres Observatory Global Telescope Network (United States)
Brook Taylor, Las Cumbres Observatory Global Telescope Network (United States)
Joseph R. Tufts, Semiconductor Technology Associates Inc. (United States)


Published in SPIE Proceedings Vol. 10702:
Ground-based and Airborne Instrumentation for Astronomy VII
Christopher J. Evans; Luc Simard; Hideki Takami, Editor(s)

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