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

  • P. R. Gillingham (a1)

Abstract

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.

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References

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Ashley, M. C. B., et al. 1996, PASP, 721
Gascoigne, S. C. B. 1965, Obs, 85, 79
Hidas, M. G., Burton, M. G., Chamberlain, M. A., & Storey, J. W. V. 2000, PASA, 17, 260
Nguyen, H. T., et al. 1996, PASP, 108, 718
Phillips, A., et al. 1999, ApJ, 527, 1009

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