Other
Scientific paper
Apr 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985esasp.226...95a&link_type=abstract
In ESA Colloq. on Kilometric Opt. Arrays in Space p 95-97 (SEE N86-11096 01-89)
Other
Michelson Interferometers, Positioning, Spaceborne Telescopes, Alignment, Focal Plane Devices, Pointing Control Systems, Spacecraft Configurations, Spacecraft Design
Scientific paper
The high accuracy positioning of each of the three satellites of the TRIO interferometer, with respect to the others and to the reference stars, is discussed. Based on ground interferometer experience, strategy guidelines are presented with related recommendations for spacecraft design. After star pointing, the two telescopes are aligned with respect to the central station so that the star images are within the central station field of view while optical path difference is smaller than the coherence length. Fine guidance is obtained from image superimposition on the central station focal plane, and from fringe contrast measurement.
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