Statistics – Applications
Scientific paper
Mar 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984usu..rept.....w&link_type=abstract
Scientific Report, 1 Jul. - 30 Nov. 1983 Utah State Univ., Logan.
Statistics
Applications
Contamination, Countermeasures, Infrared Scanners, Optical Properties, Surveillance, Deposits, Infrared Detectors, Ions, Light Scattering, Mirrors, Oxygen Analyzers, Particles, Service Life, Space Surveillance (Spaceborne), Telescopes, Water Vapor
Scientific paper
Cryogenically cooled, high straylight rejection, infrared sensors are currently planned for use in space surveillance applications. An investigative study was made to determine the optical contamination problem of these sensors during a 4-year mission duration and the feasibility of designing an anticontamination system that can be adapted to these sensors. The optical contamination problem is the increase in optical scatter of the telescope primary mirror due to cryodeposits of atomic oxygen (external) and water vapor (self generated), and particulate contamination (self generated). At sensor altitude of 1,000 km the atomic oxygen cryodeposit on the mirror, accumulated over 4 years of mission life, may be a factor of 100 higher than what is considered manageable.
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