An Optical Design for an Antarctic 2m Telescope with a Near IR Imager
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.
- Publication:
-
Publications of the Astronomical Society of Australia
- Pub Date:
- 2002
- DOI:
- 10.1071/AS01071
- Bibcode:
- 2002PASA...19..301G
- Keywords:
-
- telescopes;
- infrared: general;
- instrumentation: photometers;
- methods: observational