The tilt determination problem of laser guide star in adaptive optics

Details The tilt determination problem of laser guide star in adaptive optics The tilt determination problem of laser guide star in adaptive optics

Feb 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997cha%26a..21..256f&link_type=abstract

Chinese Astronomy and Astrophysics, Volume 21, Issue 2, p. 256-256.

Astronomy and Astrophysics

Astrophysics

Scientific paper

The expression of the tilt-corrected anisoplanatic variance of laser guide star in adaptive optics is derived from Zernike polynomials. By a criterion of tilt anisoplanatic variance 1 rad2, the expression of tilt isoplanatic angle is derived, which coincides with the derived expression of Parenti and Sasiela. For a turbulence model measured at Kunming and a 0.6 m diameter aperture at a 0.5μm operating wavelength, the tilt anisoplanatic angle is 15.3 μrad, and the isoplanatic angle θ0 is 5μrad. The θtilt is a factor of 2 larger than θ0 under these conditions.

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