Imaging of the terrestrial aurora in the vacuum ultraviolet

Marsha R. Torr; Douglas G. Torr

doi:10.1117/12.147637

7 July 1993 Imaging of the terrestrial aurora in the vacuum ultraviolet

Marsha R. Torr, Douglas G. Torr

Proceedings Volume 2008, Instrumentation for Magnetospheric Imagery II; (1993) https://doi.org/10.1117/12.147637
Event: SPIE's 1993 International Symposium on Optics, Imaging, and Instrumentation, 1993, San Diego, CA, United States

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.

Citation Download Citation

Marsha R. Torr and Douglas G. Torr "Imaging of the terrestrial aurora in the vacuum ultraviolet", Proc. SPIE 2008, Instrumentation for Magnetospheric Imagery II, (7 July 1993); https://doi.org/10.1117/12.147637

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