Computer Science
Scientific paper
Jan 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984spie..444..106s&link_type=abstract
IN: Advanced technology optical telescopes II; Proceedings of the Meeting, London, England, September 5, 6, 1983 (A85-25230 10-8
Computer Science
1
Aberration, Mirrors, Optical Correction Procedure, Optical Paths, Reflecting Telescopes, Astigmatism, Segments
Scientific paper
Two aspheric reflecting elements can correct exactly the spherical aberration and coma of a spherical primary mirror. The remaining off-axis aberrations depend mainly on the sizes of the secondary and tertiary mirrors. Two solutions are presented in which the secondary mirror is 1 meter in diameter. The first is for a 5-meter f/0.8 primary suitable for use as an optical Arecibo (fixed primary) telescope. The second is for a fully steerable telescope with a 12-meter f/1.33 primary. In both cases, 1 arcsecond images are formed at the edge of a field 4 arcminutes in diameter. The collimation tolerances for the corrector assemblies are stringent in comparison to most conventional telescopes, but modest in comparison to the precision required to maintain a segmented primary mirror.
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