1 August 1992 High resolution imaging at the Multiple Mirror Telescope using adaptive optics
Author Affiliations +
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.
© (1992) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Michael Lloyd-Hart, Michael Lloyd-Hart, Peter L. Wizinowich, Peter L. Wizinowich, David M. Wittman, David M. Wittman, D'nardo Colucci, D'nardo Colucci, Brian A. McLeod, Brian A. McLeod, Richard G. Dekany, Richard G. Dekany, James Roger P. Angel, James Roger P. Angel, Donald W. McCarthy, Donald W. McCarthy, Marcia J. Rieke, Marcia J. Rieke, Mark J. McCaughrean, Mark J. McCaughrean, } "High resolution imaging at the Multiple Mirror Telescope using adaptive optics", Proc. SPIE 1688, Atmospheric Propagation and Remote Sensing, (1 August 1992); doi: 10.1117/12.137911; https://doi.org/10.1117/12.137911


The Giant Magellan Telescope active optics system
Proceedings of SPIE (July 21 2014)
W.M. Keck Observatory adaptive optics program
Proceedings of SPIE (May 30 1994)
Predictors in the servo-loop of an AO system
Proceedings of SPIE (September 10 1998)

Back to Top