Progress in diffraction-limited imaging at the Multiple Mirror Telescope with adaptive optics.

Details Progress in diffraction-limited imaging at the Multiple Mirror Telescope with adaptive optics. Progress in diffraction-limited imaging at the Multiple Mirror Telescope with adaptive optics.

Feb 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994josaa..11..846l&link_type=abstract

Journal of the Optical Society of America A, Vol. 11, No. 2, p. 846 - 857

Physics

Optics

3

Mmt: Adaptive Optics

Scientific paper

Low spatial frequencies of atmospheric turbulence are especially troublesome to astronomers because the phase distortions that these frequencies cause have a large amplitude. The authors have begun experiments at the Multiple Mirror Telescope to remove these errors with tip, tilt, and piston control of pieces of the wave front that is defined by the telescope's six 1.8-m primary mirrors. They present long-exposure images that were recorded at the telescope with a resolution of as high as 0.08 arcsec under piston control, and 0.32 arcsec under tilt control, by use of an adaptive instrument designed to restore diffraction-limited imaging in the near infrared. The authors summarize expected improvements to their system and discuss the application of these techniques to forthcoming large telescopes.

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