1 July 1990 Low dispersion survey spectrograph for the William Herschel Telescope
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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.
© (1990) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Jeremy R. Allington-Smith, Jeremy R. Allington-Smith, J. Mike Breare, J. Mike Breare, Richard S. Ellis, Richard S. Ellis, Ian Robert Parry, Ian Robert Parry, G. D. Shaw, G. D. Shaw, John Webster, John Webster, David W. Gellatly, David W. Gellatly, Susan P. Worswick, Susan P. Worswick, } "Low dispersion survey spectrograph for the William Herschel Telescope", Proc. SPIE 1235, Instrumentation in Astronomy VII, (1 July 1990); doi: 10.1117/12.19132; https://doi.org/10.1117/12.19132
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