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Proceedings Paper

A Study Of Surface Particulate Contamination On The Primary Mirror Of The Hubble Space Telescope
Author(s): Terence A. Facey
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Paper Abstract

Photographs of the Hubble Space Telescope's primary mirror after cleaning in June 1984, have been analyzed. Prior to the cleaning, approximately 2.5% of the mirror aperture area was obscured by dust. Particle sizes ranged from 25 micrometers diameter up to about 250 micrometers. These particles are what settled out on the mirror while covered in a class 10K clean room over a period of 2.5 years. After the cleaning operation, the primary mirror had no more than 0.7% of its area obscured by particles of dust. These particles are predominantly less than 50 micrometers in diameter.

Paper Details

Date Published: 3 September 1985
PDF: 7 pages
Proc. SPIE 0525, Measurement and Effects of Surface Defects & Quality of Polish, (3 September 1985); doi: 10.1117/12.946355
Show Author Affiliations
Terence A. Facey, Perkin-Elmer Corp. (United States)

Published in SPIE Proceedings Vol. 0525:
Measurement and Effects of Surface Defects & Quality of Polish
Lionel R. Baker; Harold E. Bennett, Editor(s)

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