Cryogenically Cooled Array Spectrometer For Near-Infrared Astronomy

C M Mountain; R G. Bingham; C Sanchez-Magro; M J Selby

doi:10.1117/12.966131

9 January 1984 Cryogenically Cooled Array Spectrometer For Near-Infrared Astronomy

C M Mountain, R G. Bingham, C Sanchez-Magro, M J Selby

Proceedings Volume 0445, Instrumentation in Astronomy V; (1984) https://doi.org/10.1117/12.966131
Event: 1983 Astronomy Conferences, 1983, London, United Kingdom

Abstract

This paper first looks at the general constraints imposed on a cryogenically cooled infrared spectrometer designed for astronomical work in the 1 μm - 5 μm region. Limitations imposed by telescope diameter, detector size and type of object are discussed, which can be different from those usually experienced with visible instruments. The large background fluxes present at infrared wavelengths can make the conventional Resolution-Luminosity product an inappropriate measure of performance. The need to cool such spectrometers is also reviewed. A working cooled grating spectrometer is described and we present a new design for a cooled array spectrometer, using a grating, capable of utilizing a 32 or 128 element linear InSb array. This instrument is being built at Imperial College and the IAC, Tenerife for use on the 2.5 m INT and 4.2 m telescopes at the N.H.O., La Palma.

Citation Download Citation

C M Mountain, R G. Bingham, C Sanchez-Magro, and M J Selby "Cryogenically Cooled Array Spectrometer For Near-Infrared Astronomy", Proc. SPIE 0445, Instrumentation in Astronomy V, (9 January 1984); https://doi.org/10.1117/12.966131

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