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Cooled grating array spectrometer for 0.6-5 micronsA grating spectrometer, designed to illuminate an array of 122 InSb photodiodes with minimum aberrations and maximum speed, has been constructed. The instrument will be used on the 5 meter Hale telescope at Palomar Observatory, and is easily adaptable to telescopes of various focal ratios. A resolving power of 100-1000 can be obtained at wavelengths between 0.6 microns and 5 microns with remotely interchangeable gratings. The spectrometer is sufficiently compact to fit on the 8-inch work surface of a commercially available dewar, and uses simple on-axis spherical and paraboloidal optical elements. The camera mirror produces an f/2.5 beam which, with the 0.2 mm detectors, allows a 3-in. focal-plane aperture on the 5 meter telescope. All rays fall within a 100 microns blur circle at all points along the array. Distortions have been corrected with a tilted field flattening lens in front of the detector.
Document ID
19830050780
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Nordholt, J. E.
(California Inst. of Tech. Pasadena, CA, United States)
Lacy, J. H.
(California Institute of Technology Pasadena, CA, United States)
Date Acquired
August 11, 2013
Publication Date
January 1, 1982
Subject Category
Instrumentation And Photography
Meeting Information
Meeting: Instrumentation in astronomy IV; Fourth Conference
Location: Tucson, AZ
Start Date: March 8, 1982
End Date: March 10, 1982
Accession Number
83A31998
Distribution Limits
Public
Copyright
Other

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