1 July 1990 Echelle spectrographs for 8-m class telescopes
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The modifications required to construct an echelle spectrograph similar to the UCLES (currently in use on the 3.9-m AAT and described by Walker et al., 1986) for an 8-m-class telescope are discussed in detail and illustrated with diagrams. The design and operational parameters of the UCLES are reviewed, and a direct factor-of-two linear scaling of the UCLES for an 8-m telescope is outlined, with particular attention to a mosaicked CCD detector array and echelle configuration, the relationship between the field rotation problem and the telescope secondary focus ratio, the feasibility of a Littrow layout with prisms in double pass immediately ahead of the echelle, prism mosaics as a low-cost approach to prismatic cross-dispersion, the characteristics and application of the 79 g/mm R4 echelle, and the possible use of white-light pupil imaging, as proposed by Baranne (1972).
© (1990) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
David D. Walker, Richard G. Bingham, and Francisco Diego "Echelle spectrographs for 8-m class telescopes", Proc. SPIE 1235, Instrumentation in Astronomy VII, (1 July 1990); doi: 10.1117/12.19117; https://doi.org/10.1117/12.19117


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