Computer-based telescope with double phase diversity

Sergei A. Dimakov; Boris V. Kislitsyn

doi:10.1117/12.460066

18 December 2002 Computer-based telescope with double phase-diversity

Sergei A. Dimakov, Boris V. Kislitsyn

Proceedings Volume 4849, Highly Innovative Space Telescope Concepts; (2002) https://doi.org/10.1117/12.460066
Event: Astronomical Telescopes and Instrumentation, 2002, Waikoloa, Hawai'i, United States

Abstract

The future telescopes indeed for exploring deep space should possess a large-clear-aperture low-weight primary mirror. Optical quality of such a mirror will apparently be non-ideal and, therefore, such a telescope will have to be supplied with a system of image correction. We consider a computer-based telescope comprising its primary mirror (PM) of a non-ideal optical quality, a laser system illuminating the PM to inquire the distortions of the specular surface, secondary optics, CCD matrices, and a computer with a proper software. This telescope allow one, in principle, to obtain images of deep-space objects with a high angular resolution in the time-delayed (rather than real-time) mode because of computer processing of the information. In the paper, we also discuss advantages and disadvantages of the analog (nonlinear optical) and digital (phase-diversity) image correction techniques.

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Sergei A. Dimakov and Boris V. Kislitsyn "Computer-based telescope with double phase-diversity", Proc. SPIE 4849, Highly Innovative Space Telescope Concepts, (18 December 2002); https://doi.org/10.1117/12.460066

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KEYWORDS

Phase modulation

Telescopes

Space telescopes

Mirrors

Laser beam diagnostics

Image quality

Charge-coupled devices

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