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Title:
An Optical Design for an Antarctic 2m Telescope with a Near IR Imager
Authors:
Gillingham, P. R.
Affiliation:
AA(Anglo-Australian Observatory, PO Box 296, Epping, NSW 1710, Australia )
Publication:
Publications of the Astronomical Society of Australia, Volume 19, Issue 3, pp. 301-305. (PASA Homepage)
Publication Date:
00/2002
Origin:
PASA
Astronomy Keywords:
telescopes, infrared: general, instrumentation: photometers, methods: observational
DOI:
10.1071/AS01071
Bibliographic Code:
2002PASA...19..301G

Abstract

A study has been made of the optical performance to be expected from an Antarctic Ritchey Chrétien telescope with a 2m diameter primary mirror imaging directly onto a detector array in the K and L infrared windows. Near diffraction limited performance is provided across a flat 30arcmin diameter field by compensating the astigmatism and field curvature with a meniscus lens which also serves as the Dewar window. With baffling inside and Narcissus mirrors outside the Dewar, extraneous radiation can be kept to a low level.

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