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Proceedings Paper

Imaging of the terrestrial aurora in the vacuum ultraviolet
Author(s): Marsha R. Torr; Douglas G. Torr
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Paper Abstract

The POLAR spacecraft of the Global Geospace Science Mission is scheduled for launch in the summer of 1994. Included in the payload is an advanced ultraviolet imager that will emphasize gathering data for quantitative interpretation of the simultaneously observed global auroral phenomenon. Significant advances have been made in the area of thin film filters, optics, and intensified-CCD focal plane detectors. These advances make possible imaging of weak but key diagnostic auroral emission features under fully sunlit conditions. The instrument's f/2.9 optical system, its highly efficient narrow band FUV filters, and high quantum efficiency focal plane detector combine to yield a noise equivalent signal of 4R per 37 second image. The instantaneous dynamic range is > 1000, and the 8 degree(s) field of view allows coherent global imaging of the auroral oval. The performance of the instrument and its components in extensive laboratory testing is discussed.

Paper Details

Date Published: 7 July 1993
PDF: 1 pages
Proc. SPIE 2008, Instrumentation for Magnetospheric Imagery II, (7 July 1993); doi: 10.1117/12.147637
Show Author Affiliations
Marsha R. Torr, NASA Marshall Space Flight Ctr. (United States)
Douglas G. Torr, Univ. of Alabama in Huntsville (United States)

Published in SPIE Proceedings Vol. 2008:
Instrumentation for Magnetospheric Imagery II
Supriya Chakrabarti, Editor(s)

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