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Proceedings Paper

Cryogenically Cooled Array Spectrometer For Near-Infrared Astronomy
Author(s): C M Mountain; R G. Bingham; C Sanchez-Magro; M J Selby
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Paper 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.

Paper Details

Date Published: 9 January 1984
PDF: 8 pages
Proc. SPIE 0445, Instrumentation in Astronomy V, (9 January 1984); doi: 10.1117/12.966131
Show Author Affiliations
C M Mountain, Imperial College (United Kingdom)
R G. Bingham, Royal Greenwich Observatory (United Kingdom)
C Sanchez-Magro, Instituto de Astrofisica (United Kingdom)
M J Selby, Imperial College (United Kingdom)


Published in SPIE Proceedings Vol. 0445:
Instrumentation in Astronomy V
Alec Boksenberg; David L. Crawford, Editor(s)

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