Stellar scintillation technique for the measurement of tilt anisoplanatism

Details Stellar scintillation technique for the measurement of tilt anisoplanatism Stellar scintillation technique for the measurement of tilt anisoplanatism

Nov 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988josaa...5.1929w&link_type=abstract

Optical Society of America, Journal, A: Optics and Image Science (ISSN 0740-3232), vol. 5, Nov. 1988, p. 1929-1936. USAF-sponsor

Physics

Optics

4

Atmospheric Optics, Field Of View, Optical Transfer Function, Scintillation, Apertures, Binary Stars, Phase Error, Signal Processing, Signal Transmission

Scientific paper

The significance of isoplanatism for optical systems operating within the atmosphere is demonstrated. A measurement theory, based on aperture-averaging intensity scintillation, is presented. Although direct techniques for determining the required aperture-intensity mask for arbitrary delta alpha (delta alpha being the angle at the transmit-receive aperture) are not presented, a mask is found for a problem of practical interest. The problem is one of adaptive tilt correction in the presence of a 17.4-microrad point ahead angle delta alpha.

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