Design philosophy of the forthcoming echelle spectrographs for the AAT and LPO

Details Design philosophy of the forthcoming echelle spectrographs for the AAT and LPO Design philosophy of the forthcoming echelle spectrographs for the AAT and LPO

Nov 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985mnras.217..355w&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 217, Nov. 15, 1985, p. 355-365. Research supported by t

Astronomy and Astrophysics

Astronomy

51

Astronomical Spectroscopy, Echelle Gratings, High Dispersion Spectrographs, High Resolution, Systems Engineering, Constraints, Optical Properties, Optimization, Stellar Spectrophotometry, Supernova Remnants

Scientific paper

The basic concepts behind the design of echelle spectrographs being built for the Anglo-Australian Telescope, and proposed for the 4.2-m William Herschel Telescope of the LPO, are described. The astronomical requirements are outlined, followed by consideration of the constraints imposed by the detector. Attention is drawn to the importance of the echelle blaze profile, and results of the calculations are presented. The effects of the minimum SNR and its uniformity in the resulting data are stressed, and the implications on optical design described. Some consequences of different cross disperser designs are also considered.

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