Evaluation of a solid KRS-5 grism for infrared astronomy

John T. Rayner

doi:10.1117/12.317311

21 August 1998 Evaluation of a solid KRS-5 grism for infrared astronomy

John T. Rayner

Proceedings Volume 3354, Infrared Astronomical Instrumentation; (1998) https://doi.org/10.1117/12.317311
Event: Astronomical Telescopes and Instrumentation, 1998, Kona, HI, United States

Abstract

We discuss the design and performance of a solid KRS-5 grism used in NSFCAM, a 1-5.5 micrometers facility IR camera at the NASA IR telescope Facility on Mauna Kea. The grism was built by Carl Zeiss, Jena-Germany, and cost 13,800 dollars. It is used with order-sorting filters in the L-, K- and H-bands, and provides a spectral resolution of R equals 280. We also discus the advantages and disadvantages of solid grisms over replica resin grisms, and illustrate the performance of the grism with some astronomical observations.

Citation Download Citation

John T. Rayner "Evaluation of a solid KRS-5 grism for infrared astronomy", Proc. SPIE 3354, Infrared Astronomical Instrumentation, (21 August 1998); https://doi.org/10.1117/12.317311

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