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Proceedings Paper

Design for a ground-based spectrometric facility for measuring the terrestrial dayglow from the near-ultraviolet to the near-infrared
Author(s): Douglas G. Torr; Chen Feng; Wesley R. Swift; Muamer Zukic
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Paper Abstract

In a companion paper (Swift and Torr), we demonstrate a capability to observe thermospheric dayglow emissions from the ground using a novel photometric approach. In this paper we incorporate the principles of the technique into the design of a spectrometric facility capable of measuring the dayglow spectrum over the wavelength range 300 to 880 m at < 0.5 nm resolution with photometric like sensitivity, namely 50 counts/R at 300 nm and approximately 200 counts/R at 600 nm. the design is an all refractive f/1.4 distortion correctable grating spectrograph capable of operating over a full diurnal cycle with high sensitivity. The field of view is 14 degree(s). The instrument has a dynamic range of 108, no moving parts except shutters, and a noise equivalent detection threshold of approximately 15R in the daytime and 0.01 to 0.1 R at night. The design comprises four spectrometric modules which provide simultaneous measurements of emissions in the 300 - 900 nm range. A 1024 X 1024 CCD is used for the detector. The facility should provide simultaneous measurements from the ground of the rich spectral content of the daytime mesosphere, thermosphere and ionosphere.

Paper Details

Date Published: 30 September 1994
PDF: 14 pages
Proc. SPIE 2266, Optical Spectroscopic Techniques and Instrumentation for Atmospheric and Space Research, (30 September 1994); doi: 10.1117/12.187555
Show Author Affiliations
Douglas G. Torr, Univ. of Alabama in Huntsville (United States)
Chen Feng, Univ. of Alabama in Huntsville (United States)
Wesley R. Swift, Univ. of Alabama in Huntsville (United States)
Muamer Zukic, Univ. of Alabama in Huntsville (United States)


Published in SPIE Proceedings Vol. 2266:
Optical Spectroscopic Techniques and Instrumentation for Atmospheric and Space Research
Jinxue Wang; Paul B. Hays, Editor(s)

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