3 September 1985 A Study Of Surface Particulate Contamination On The Primary Mirror Of The Hubble Space Telescope
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Proceedings Volume 0525, Measurement and Effects of Surface Defects & Quality of Polish; (1985) https://doi.org/10.1117/12.946355
Event: 1985 Los Angeles Technical Symposium, 1985, Los Angeles, United States
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.
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Terence A. Facey, Terence A. Facey, } "A Study Of Surface Particulate Contamination On The Primary Mirror Of The Hubble Space Telescope", Proc. SPIE 0525, Measurement and Effects of Surface Defects & Quality of Polish, (3 September 1985); doi: 10.1117/12.946355; https://doi.org/10.1117/12.946355
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