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

Publications of the Astronomical Society of Australia

P. R. Gillingham¹ 

关键词: telescopes;    infrared: general;    instrumentation: photometers;    methods: observational;   

DOI  :  10.1071/AS01071

学科分类：天文学(综合)

来源: CSIRO

【 摘 要 】

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.

【 授权许可】

Unknown