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Optical Engineering

Atmospheric Emissions Photometric Imaging Experiment For Spacelab 1
Author(s): William G. Sandie; Stephen B. Mende; Gary R. Swenson; Michael E. Polites
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Paper Abstract

The atmospheric emissions photometric imaging (AEPI) experiment to be flown on Spacelab 1 is designed to study faint natural and artificial atmospheric emission phenomena. Atmospheric emissions in the spectral region 2000 A to 7500 A from two optical channels, wide angle and telephoto, are detected by an image-enhanced low-light-level TV system. A third, telephoto, optical channel images onto the photocathode of a microchannel plate photomultiplier tube having 100 discrete anodes. Photons are counted for each discrete anode, providing a direct measure of the luminosity of an object viewed by the TV telephoto lens, albeit with low spatial resolution. Detector pointing in the range ±40°x±80°exclusive of restrictions due to the proximity of other experiments is provided by a two-axis gimbal made from a surplus Apollo telescope mount (MAST). The pointing stability is 1 arc min with respect to the spacecraft coordinate system for an exposure of one s, and the tracking capability is 3.5 deg - s-1 with a stability of 1 arc min. The detector and pointing system are located on the Spacelab pallet and are controlled by stored programs resident in the dedicated experiment processor located in the Spacelab module.

Paper Details

Date Published: 1 December 1983
PDF: 9 pages
Opt. Eng. 22(6) doi: 10.1117/12.7973235
Published in: Optical Engineering Volume 22, Issue 6
Show Author Affiliations
William G. Sandie, Lockheed Palo Alto Research Laboratory (United States)
Stephen B. Mende, Lockheed Palo Alto Research Laboratory (United States)
Gary R. Swenson, NASA/Marshall Space Flight Center (United States)
Michael E. Polites, NASA/Marshall Space Flight Center (United States)


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