Performance of the Multiple Mirror Telescope (MMT). VIII - MMT as an optical-infrared interferometer and phased array

Details Performance of the Multiple Mirror Telescope (MMT). VIII - MMT as an optical-infrared interferometer and phased array Performance of the Multiple Mirror Telescope (MMT). VIII - MMT as an optical-infrared interferometer and phased array

Oct 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982spie..332...57m&link_type=abstract

IN: International Conference on Advanced Technology Optical Telescopes, Tucson, AZ, March 11-13, 1982, Proceedings (A83-30976 13

Physics

Infrared Interferometers, Mirrors, Phased Arrays, Reflecting Telescopes, Angular Resolution, High Resolution, Infrared Spectrophotometers, Optical Transfer Function, Signal To Noise Ratios, Spatial Filtering, Spatial Resolution

Scientific paper

Using the Multiple Mirror Telescope (MMT) as a two-element interferometer with a 6.9-m maximum baseline, which is capable of substantial spatial resolution gains at 0.5 and 5.0 microns, Michelson fringe measurements at the latter wavelength have determined path length errors within the MMT and characterized path length stability versus elevation angle, temperature, and optical element perturbation. MMT measurements have fully resolved the 0.024-arcsec diameter disk of Alpha Tau and the 0.1-arcsec binary Beta Tau, and also provided new measurements of the spectroscopic binary Alpha Aur. When configured as a phased array of four or six elements, the MMT responds to the full range of spatial frequencies present in a filled 6.9-m aperture having only a small degree of redundancy. A fully phased MMT is especially suited to low background IR photometry.

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