A low resolution array spectrograph for the 2.9 to 13.5 micron spectral region

Details A low resolution array spectrograph for the 2.9 to 13.5 micron spectral region A low resolution array spectrograph for the 2.9 to 13.5 micron spectral region

Jul 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990spie.1235..171h&link_type=abstract

IN: Instrumentation in astronomy VII; Proceedings of the Meeting, Tucson, AZ, Feb. 13-17, 1990 (A91-29601 11-35). Bellingham, WA

Astronomy and Astrophysics

Astronomy

22

Electronic Equipment, Infrared Detectors, Infrared Spectrometers, Optical Equipment, Signal Processing, Spectral Resolution, Bolometers, Mirrors, Prisms

Scientific paper

This paper describes the optical system and the electronics of a newly developed low-resolution IR spectrograph, designed for ground-based and airborne observations. The spectrograph covers the entire 2.9- to 13.5-micron spectral region simultaneously, without scanning, at a nominal resolving power of 50 and a minimum resolving power of 20. The new spectrograph equals in spectral coverage to circular variable filter spectrometers that contain three filter segments. Because all of the detectors view the source through the same aperture, telescope tracking errors do not result in spectral ambiguities such as those that can arise in scanning spectrometers.

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