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Proceedings Paper

Optical alignments of the Cosmic Background Explorer observatory
Author(s): Henry P. Sampler
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Paper Abstract

Various and unique alignment tooling techniques were used to determine the angular alignments and stabilities of multiple components in a single coordinate system. The methods discussed were developed for alignment of the COBE Observatory1. Acost effective and unique precision alignment facility was devised for the COBE high fidelity Enneering Test Unit (ETU) Observatory. The ETU spacecraft and Cryogenic Optical Assembly (COA) with dummy components attached were measured to verify their structural integrity and mechanical stability. Optical-mechanical alignment techniques were also used to integrate the flight Observatory's attitude control system module (consisting of gyros, reaction wheels, and one of the Observatory's momentum wheels). The techniques for alignments and stabilities of the earth scanners, sun sensors, Far JR Absolute Spectrophotometer (FIRAS), Diffuse Infrared Background Experiment (DIRBE), and Differential Microwave Radiometers (DMR) antenna horn boresights are also discussed.

Paper Details

Date Published: 1 November 1990
PDF: 13 pages
Proc. SPIE 1340, Cryogenic Optical Systems and Instruments IV, (1 November 1990); doi: 10.1117/12.23069
Show Author Affiliations
Henry P. Sampler, NASA/Goddard Space Flight Ctr. (United States)


Published in SPIE Proceedings Vol. 1340:
Cryogenic Optical Systems and Instruments IV
Ramsey K. Melugin; Gerald R. Pruitt, Editor(s)

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