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Proceedings Paper

Analysis of efficiency of criterion of adaptation on the contrast of the infrared speckle image in large-sized telescopes
Author(s): Yurij Petrovich Shumilov; Peter Alexseevich Bakut
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Paper 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.

Paper Details

Date Published: 30 January 2003
PDF: 3 pages
Proc. SPIE 4840, Future Giant Telescopes, (30 January 2003); doi: 10.1117/12.459932
Show Author Affiliations
Yurij Petrovich Shumilov, Institute for Problems of Informational Resources (United States)
Peter Alexseevich Bakut, Institute for Problems of Informational Resources (Russia)


Published in SPIE Proceedings Vol. 4840:
Future Giant Telescopes
J. Roger P. Angel; Roberto Gilmozzi, Editor(s)

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