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Proceedings Paper

Design and performance of an 85-actuator curvature system
Author(s): Malcolm J. Northcott; J. Elon Graves; Francois J. Roddier; Francois J. Rigaut
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Paper Abstract

The UH 36 element curvature AO system, Hokupa'a-36, was recently moved to the Gemini 8m telescope, where it was used with great success obtaining images for the telescope dedication. Since the 36 actuator system was optimized for performance on a 4 m (CFHT) telescope it does not provide full near IR wavelength converge on the Gemini 8m telescope. In order to address this issue we are planning to upgrade the system to 85 actuators. Given the slightly better seeing expected at the Gemini telescope, the move to 85 actuators will give Strehl ratios commensurate to those obtained with 36 actuators on the CFHT. The limiting magnitude will scale with the telescope aperture giving considerably better sky coverage than at the CFHT. Curvature AO systems can scale considerably beyond 85 actuators, at this point technology presents the most important limitations to scaling.

Paper Details

Date Published: 7 July 2000
PDF: 5 pages
Proc. SPIE 4007, Adaptive Optical Systems Technology, (7 July 2000); doi: 10.1117/12.390287
Show Author Affiliations
Malcolm J. Northcott, Univ. of Hawaii/Manoa (United States)
J. Elon Graves, Univ. of Hawaii/Manoa (United States)
Francois J. Roddier, Univ. of Hawaii/Manoa (United States)
Francois J. Rigaut, Gemini Observatory (United States)

Published in SPIE Proceedings Vol. 4007:
Adaptive Optical Systems Technology
Peter L. Wizinowich, Editor(s)

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