Effects of aberrations on transfer functions used in high angular resolution astronomical imaging.

Details Effects of aberrations on transfer functions used in high angular resolution astronomical imaging. Effects of aberrations on transfer functions used in high angular resolution astronomical imaging.

Dec 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992jmo....39.2383z&link_type=abstract

Journal of Modern Optics, Vol. 39, No. 12, p. 2383 - 2404

Physics

Optics

Scientific paper

The authors present the results of the effect of aberrations on the transfer functions used in the high-angular resolution astronomical imaging techniques of speckle interferometry, Knox-Thompson and bispectral imaging. The analyses are based on a computer simulation of imaging through atmospheric turbulence. The results show that as the seeing becomes worse, its effect dominates the behaviour of the transfer functions which tend to be independent of (small) optical aberrations. However, if the wavefront variations due to fixed aberrations is significant over r0-sized regions in the pupil (where r0 is the Fried parameter), the above transfer functions to depend on the abberation: in particular, the bispectral transfer function is relatively sensitive to odd aberations, such as coma.

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