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Proceedings Paper

Low dispersion survey spectrograph for the William Herschel Telescope
Author(s): Jeremy R. Allington-Smith; J. Mike Breare; Richard S. Ellis; Ian Robert Parry; G. D. Shaw; John Webster; David W. Gellatly; Susan P. Worswick
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Paper Abstract

This paper describes the Low Dispersion Survey Sectrograph (LDSS-2) currently under construction for the 4.2-m William Herschel Telescope. The instrument is a versatile highly efficient multiobject spectrograph with an 11.5-arcmin field of view. Around 100 objects can be observed simultaneously using multiaperture masks made at the telescope in real-time at dispersions selectable between 10 and 47 nm/mm. By removing the dispersing element, the instrument can act as a focal reducer with a final focal ratio of f/2. This allows the field to be imaged first in order to derive accurate instrumental coordinates for the manufacture of the aperture mask.

Paper Details

Date Published: 1 July 1990
PDF: 11 pages
Proc. SPIE 1235, Instrumentation in Astronomy VII, (1 July 1990); doi: 10.1117/12.19132
Show Author Affiliations
Jeremy R. Allington-Smith, Univ. of Durham (United Kingdom)
J. Mike Breare, Univ. of Durham (United Kingdom)
Richard S. Ellis, Univ. of Durham (United States)
Ian Robert Parry, Univ. of Durham (United Kingdom)
G. D. Shaw, Univ. of Durham (United Kingdom)
John Webster, Univ. of Durham (United Kingdom)
David W. Gellatly, Royal Greenwich Observatory (United States)
Susan P. Worswick, Royal Greenwich Observatory (United Kingdom)

Published in SPIE Proceedings Vol. 1235:
Instrumentation in Astronomy VII
David L. Crawford, Editor(s)

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