Accession Number:

AD0756772

Title:

Degradation of Cold Optical Systems by Cryodeposition. Report for 1971 Independent Research Program

Descriptive Note:

Corporate Author:

LOCKHEED MISSILES AND SPACE CO INC PALO ALTO CA PALO ALTO RESEARCH LAB

Personal Author(s):

Report Date:

1972-02-05

Pagination or Media Count:

74.0

Abstract:

The work reported here represents the first year effort on one part of a research program dealing with transient degradation and contamination of optical materials on orbiting spacecrafts. The present investigation concerned itself with the degradation of the optical system performance as a result of decreased transmission, scattering of out-of-field energy, decreased reflectance of mirrors and increased reflectance of black surfaces caused by the cryodeposition of condensible gases and the debris cloud formed by particulate and gaseous constituents. Pertinent information was collected to identify the possible contaminants associated with the spacecraft environment. A study was also conducted for the radiative characteristics of solid cryodeposit on transparent and opaque substrate. Cryodeposition tests have also been conducted with specific contaminants to determine the degradation of a sensor performance.

Subject Categories:

  • Physical Chemistry
  • Optics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE