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Proceedings Paper

UHRF: spectral resolution to the limit
Author(s): Francisco Diego; Ian A. Crawford; Mike J. Barlow; Adrian C. Fish; Mark Dryburgh; David Brooks; Jason Spyromilio; Ian D. Howarth; David D. Walker
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Paper Abstract

Until recently the study of cool clouds of interstellar matter had been limited by the relatively low spectral resolutions provided by existing spectrographs. The Ultra-High-Resolution Facility (UHRF) recently commissioned at the Anglo-Australian Telescope has changed dramatically this panorama by delivering for the first time resolutions approaching one million, near the diffraction limit of the largest echelle gratings available. The instrument shares the east coude room with the University College London Echelle Spectrograph, in what is now one of the most powerful spectrographic installations worldwide. This contribution describes the characteristics of the UHRF, including its design, manufacture, testing, and commissioning. The UHRF incorporates a novel image slicer (described elsewhere in these proceedings), which allows ultra-high-resolution observations on faint objects. Astrophysical results from the first observing runs are presented to demonstrate the UHRF performance in both resolution and throughput.

Paper Details

Date Published: 1 June 1994
PDF: 15 pages
Proc. SPIE 2198, Instrumentation in Astronomy VIII, (1 June 1994); doi: 10.1117/12.176704
Show Author Affiliations
Francisco Diego, Univ. College London (United Kingdom)
Ian A. Crawford, Univ. College London (United Kingdom)
Mike J. Barlow, Univ. College London (United Kingdom)
Adrian C. Fish, Univ. College London (United Kingdom)
Mark Dryburgh, Univ. College London (United Kingdom)
David Brooks, Univ. College London (United Kingdom)
Jason Spyromilio, Anglo-Australian Observatory (Germany)
Ian D. Howarth, Univ. College London (United Kingdom)
David D. Walker, Univ. College London (United Kingdom)

Published in SPIE Proceedings Vol. 2198:
Instrumentation in Astronomy VIII
David L. Crawford; Eric R. Craine, Editor(s)

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