Wide-field-of-view astronomical imaging using a guide-star reference

Details Wide-field-of-view astronomical imaging using a guide-star reference Wide-field-of-view astronomical imaging using a guide-star reference

Apr 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993spie.1780..923g&link_type=abstract

Proc. SPIE Vol. 1780, p. 923-932, Lens and Optical Systems Design, Hannfried Zuegge; Ed.

Physics

Optics

2

Scientific paper

We analyze the use of a single laser or natural guidestar to correct atmospheric distortion for a wide field of view (WFOV) imaging system. We concentrate on the absolute system limits without regard to radiometrics or compensation method by evaluating the best system OTF possible at field points in and beyond the isoplanatic patch. The improvement of OTF at mid- spatial frequencies is several decades over the non-corrected OTF even at field angles of one arc minute, and we conclude that post processing should be able to recover much more information in adaptive optics systems even at wide FOVs than uncompensated systems.

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