Analysis of efficiency of criterion of adaptation on the contrast of the infrared speckle image in large-sized telescopes

Yurij Petrovich Shumilov; Peter Alexseevich Bakut

doi:10.1117/12.459932

30 January 2003 Analysis of efficiency of criterion of adaptation on the contrast of the infrared speckle image in large-sized telescopes

Yurij Petrovich Shumilov, Peter Alexseevich Bakut

Author Affiliations +

Proceedings Volume 4840, Future Giant Telescopes; (2003) https://doi.org/10.1117/12.459932
Event: Astronomical Telescopes and Instrumentation, 2002, Waikoloa, Hawai'i, United States

Abstract

The speckle image of a dot source is investigated in a focal plane of a large-sized telescope in a window of transparency 8-12 μ. The dot source is created with the help of a corner reflector established on geostationary satellite which is lighted with CO₂-laser. The casual realization of speckle image is generated. Contrasts of infrared (IR) speckle-image and elements speckle image and own geometrical noise of a large-sized telescope are calculated. The own geometrical noise arises because of mistakes in installation of composite mirrors of a telescope. The parameters of IR speckle image and geometrical noise are determined, at which the speckle structure disappears. The estimation of affinity of the “missed” image with diffracted one is received which determines efficiency of adaptation by the offered criterion.

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Yurij Petrovich Shumilov and Peter Alexseevich Bakut "Analysis of efficiency of criterion of adaptation on the contrast of the infrared speckle image in large-sized telescopes", Proc. SPIE 4840, Future Giant Telescopes, (30 January 2003); https://doi.org/10.1117/12.459932

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