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An Optical Design for an Antarctic 2 m Telescope with a Near IR Imager

Published online by Cambridge University Press:  05 March 2013

P. R. Gillingham
P. R. Gillingham*
Affiliation:
Anglo-Australian Observatory, PO Box 296, Epping, NSW 1710, Australia; [email protected]
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Abstract

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A study has been made of the optical performance to be expected from an Antarctic Ritchey Chrétien telescope with a 2 m 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 30 arcmin 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.

Keywords

telescopesinfrared: generalinstrumentation: photometersmethods: observational
Type
Research Article
Information
Publications of the Astronomical Society of Australia , Volume 19 , Issue 3 , 2002 , pp. 301 - 305
Copyright
Copyright © Astronomical Society of Australia 2002

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