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Proceedings Paper

High-resolution imaging at the Multiple Mirror Telescope using adaptive optics
Author(s): Michael Lloyd-Hart; Peter L. Wizinowich; David M. Wittman; D'nardo Colucci; Brian A. McLeod; Richard G. Dekany; James Roger P. Angel; Donald W. McCarthy; Marcia J. Rieke; Mark J. McCaughrean
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Paper Abstract

The next generation of 6 to 10 m class telescopes is being planned to include the capability for adaptive wavefront correction. The MMT with its 7-m baseline, provides an ideal testbed for novel techniques of adaptive optics. Using a new instrument based on a six-segment adaptive mirror, a number of wavefront sensing algorithms including an artificial neural network have been implemented to demonstrate the high resolution imaging capability of the telescope. These algorithms rely on a freely available property of starlight, namely, its coherence over large scales, to sense directly atmospheric and instrumental phase errors across large distances. In this paper, we report results obtained so far with resolutions between 0.08 and 0.3 arcsec at 2.2-micron wavelength. We also show data indicating that at the level of 0.1-arcsec imaging in good seeing, the isoplanatic patch at this wavelength is at least 20 arcsec across.

Paper Details

Date Published: 1 August 1992
PDF: 11 pages
Proc. SPIE 1688, Atmospheric Propagation and Remote Sensing, (1 August 1992); doi: 10.1117/12.137911
Show Author Affiliations
Michael Lloyd-Hart, Steward Observatory/Univ. of Arizona (United States)
Peter L. Wizinowich, Steward Observatory/Univ. of Arizona (United States)
David M. Wittman, Steward Observatory/Univ. of Arizona (United States)
D'nardo Colucci, Steward Observatory/Univ. of Arizona (United States)
Brian A. McLeod, Steward Observatory/Univ. of Arizona (United States)
Richard G. Dekany, Steward Observatory/Univ. of Arizona (United States)
James Roger P. Angel, Steward Observatory/Univ. of Arizona (United States)
Donald W. McCarthy, Steward Observatory/Univ. of Arizona (United States)
Marcia J. Rieke, Steward Observatory/Univ. of Arizona (United States)
Mark J. McCaughrean, Steward Observatory/Univ. of Arizona (United States)


Published in SPIE Proceedings Vol. 1688:
Atmospheric Propagation and Remote Sensing
Anton Kohnle; Walter B. Miller, Editor(s)

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