6.5-m MMT infrared adaptive optics system: detailed design and progress report

Details 6.5-m MMT infrared adaptive optics system: detailed design and progress report 6.5-m MMT infrared adaptive optics system: detailed design and progress report

Aug 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995spie.2534..372s&link_type=abstract

Proc. SPIE Vol. 2534, p. 372-377, Adaptive Optical Systems and Applications, Robert K. Tyson; Robert Q. Fugate; Eds.

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We present an overview of the new adaptive system under development for the conversion of the Multiple Mirror Telescope (MMT) to a 6.5 m continuous primary mirror. The system is optimized for diffraction-limited imaging from 1.6 to 2.2 micrometer wavelength, using an adaptive secondary mirror which directly feeds an infrared science detector at f/15 Cassegrain focus. Nearly full sky coverage will be obtained using a low-power, continuous wave (cw) sodium laser beacon to sense high-order wavefront errors, with image motion sensing using a quadrant detector sensitive to infrared field star photons in the 1.2 - 1.6 micrometer band. Components are currently under development, so that the adaptive instrument can be integrated with the new 6.5 m telescope soon after first light.

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