Physics – Optics
Scientific paper
Dec 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992esasp.354..235b&link_type=abstract
In ESA, Targets for Space-Based Interferometry p 235-240 (SEE N93-31750 12-89)
Physics
Optics
Astronomical Interferometry, Interferometers, Spaceborne Astronomy, Adaptive Optics, Angular Resolution, High Resolution, Mirrors, Spacecraft Configurations, Spacecraft Orbits, Systems Engineering, Temperature Control
Scientific paper
A proposed orbiting interferometer covering the UV, visible and near IR spectral ranges is described, with attention being given to the optical configuration, active optics system, spacecraft structure, thermal control and orbit. With a 6 m baseline and a collecting area equivalent to about a 1.4 m diameter full aperture, this instrument is intended to offer significant improvements in resolution over the Hubble Space Telescope, and complement the new generation of ground based interferometers with much better limiting magnitude and spectral coverage. The interferometer is of the Fizeau type, a configuration which affords a large field for both science and guiding needs, as well as excellent UV throughput because of the small number of reflections. The aperture configuration is optimized for uniform u-v plane coverage with rotation around the line of sight. The interferometer is kept coaligned and cophased using a field star and an internal metrology system. The spacecraft is in a high Earth orbit to minimize thermal and mechanical disturbances and to maximize observing efficiency.
Bely Pierre-Yves
Burrows Chistopher J.
Roddier Francois
Weigelt Gerd
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