Vol. 9, issue 11, article # 8

Lukin V. P., Fortes B. V. Partial correction for turbulent distortions in the AST-10 telescope. // Atmospheric and oceanic optics. 1996. V. 9. No. 11. P. 948-956.    PDF
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Abstract:

In order to provide complete compensation for turbulent distortions in the visible range at the aperture dimensions typical for modern telescopes (6-10 m) one needs for the development of adaptive systems with hundreds of control channels. More simple adaptive systems providing a complete compensation in the infrared range can give an essential advantage in angular resolution in the visible range too. In this case the image brightness characterized by the Strehl ratio remains much less than that in the diffraction-limited case, i.e., the system provides only partial compensation. In this paper we present the results of numerical calculations of the partially corrected point spread function (PSF) for the Russian project of a 10-meter telescope AST-10 and discuss possible approaches to composing the adaptive system configuration.