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A Coudé Echelle Spectrograph with a Large Mosaic Grating but with Small Corrector Lenses

  • E. Harvey Richardson
  • Christopher L. Morbey
Conference paper
Part of the Santa Cruz Summer Workshops in Astronomy and Astrophysics book series (SANTA CRUZ)

Abstract

A spectrograph is described which uses a 30 cm by 60 cm mosaic echelle grating with 316 g/mm. The large free spectral region permits removal of overlapping orders with a filter or a small grism but is not suitable for the stacking of many orders. It is not a survey instrument. The camera mirror is made paraboloidal to avoid the need for large refractive correctors such as a Schmidt plate or a Maksutov lens. Instead, a small triplet lens is located near the focus, and can be made of fused silica at low cost to permit good transmission in the ultraviolet down to the atmospheric cut-off. The collimator mirror is spherical.

Keywords

Fuse Silica Spherical Aberration Entrance Aperture Optical Layout Corrector Lens 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. 1.
    E. H. Richardson: SPIE, 445, 530 (1983).ADSGoogle Scholar
  2. 2.
    G. A. Brealey, J. M. Fletcher, W. A. Grundmann, and E. H. Richardson: SPIE, 240, (1980).Google Scholar
  3. 3.
    E. H. Richardson, J. M. Fletcher, and W. A. Grundmann: Proc. IAU Colloquium 79, 496 (1984).Google Scholar

Copyright information

© Springer-Verlag New York Inc. 1988

Authors and Affiliations

  • E. Harvey Richardson
  • Christopher L. Morbey

There are no affiliations available

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