Physics – Optics
Scientific paper
Dec 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991spie.1542..273c&link_type=abstract
In: Active and adaptive optical systems; Proceedings of the Meeting, San Diego, CA, July 22-24, 1991 (A93-39451 15-74), p. 273-2
Physics
Optics
1
Adaptive Optics, Mirrors, Telescopes, Feedback Control, Image Motion Compensation, Seeing (Astronomy)
Scientific paper
A telescope aperture of 2.2-m on Mauna Kea that routinely experiences d/r0 = 4 in the near-IR can achieve a factor of 2 gain in angular resolution by tip-tilt correction of atmospheric-induced wavefront errors. To utilize the gains possible from tip-tilt correction, collimation errors and focus errors must also be removed. For its 2.2-m f/31 telescope, the University of Hawaii is in the process of implementing a five-axis fast guiding secondary consisting of a fast steering mirror platform and slow remote detilt, decenter, and despace collimation and focus drives. The near-term goal is to implement closed-loop tip-tilt image motion correction with open-loop collimation and focus control. The long-term goal is to add closed-loop collimation and focus control. This paper documents the progress to date on the fast steering mirror platform and its spider support structure.
Cavedoni Charles P.
Graves Elon J.
Pickles Andrew J.
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