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Proceedings Paper

Anisoplanatism in adaptive optics systems due to pupil aberrations
Author(s): Brian J. Bauman
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Paper Abstract

Adaptive optics systems typically include an optical relay that simultaneously images the science field to be corrected and also a set of pupil planes conjugate to the deformable mirror of the system. Often, in the optical spaces where DM's are placed, the pupils are aberrated, leading to a displacement and/or distortion of the pupil that varies according to field position--producing a type of anisoplanatism, i.e., a degradation of the AO correction with field angle. The pupil aberration phenomenon is described and expressed in terms of Seidel aberrations. An expression for anisoplanatism as a function of pupil distortion is derived, an example of an off-axis parabola is given, and a convenient method for controlling pupil-aberration-generated anisoplanatism is proposed.

Paper Details

Date Published: 8 October 2005
PDF: 12 pages
Proc. SPIE 5903, Astronomical Adaptive Optics Systems and Applications II, 59030R (8 October 2005); doi: 10.1117/12.618231
Show Author Affiliations
Brian J. Bauman, Lawrence Livermore National Lab. (United States)
Univ. of California, Santa Cruz (United States)


Published in SPIE Proceedings Vol. 5903:
Astronomical Adaptive Optics Systems and Applications II
Robert K. Tyson; Michael Lloyd-Hart, Editor(s)

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