Imaging performance analysis of adaptive optical telescopes using laser guide stars

Details Imaging performance analysis of adaptive optical telescopes using laser guide stars Imaging performance analysis of adaptive optical telescopes using laser guide stars

Dec 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991apopt..30.5021w&link_type=abstract

Applied Optics (ISSN 0003-6935), vol. 30, Dec. 1, 1991, p. 5021-5030.

Physics

Optics

9

Adaptive Optics, Angular Resolution, Image Analysis, Laser Guidance, Star Trackers, Telescopes, Atmospheric Optics, Mesosphere, Point Spread Functions, Seeing (Astronomy), Wave Fronts

Scientific paper

The paper presents an investigation of the expected imaging performance of an adaptive telescope using laser guide stars created in the mesospheric sodium layer. A 2-3-m class telescope is analyzed for the case of a single, on-axis guide star at an altitude of 92 km (the nominal height of the mesospheric Na layer). It is shown that a 3-m adaptive telescope using a single Na guide star is capable of achieving a Strehl ratio of 0.57 and an angular resolution nearly matching that of diffraction-limited performance (0.05 arcsec).

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