Analysis and calibration of natural guide star adaptive optics data

Eric M. Tessier

doi:10.1117/12.217736

25 August 1995 Analysis and calibration of natural guide star adaptive optics data

Eric M. Tessier

Proceedings Volume 2534, Adaptive Optical Systems and Applications; (1995) https://doi.org/10.1117/12.217736
Event: SPIE's 1995 International Symposium on Optical Science, Engineering, and Instrumentation, 1995, San Diego, CA, United States

Abstract

From natural guide star adaptive optics data taken with the Come-On Plus and with the Starfire Optical Range Generation II instruments in the JHK bands and in the I band respectively, we describe and analyze the point spread function. The ultimate exploitation of adaptive optics images requires the deconvolution and therefore the calibration of the point spread function which is commonly made by observing a point source close to the astronomical target. In the partial correction regime, the calibration mismatch which is the main source of noise or bias in the deconvolution process is induced by the varying seeing conditions. We therefore stress the procedure able to increase the quality of the calibration and discuss the typical performances in terms of astrometry, photometry, and dynamic range to be possibly extracted from current adaptive optics images as a function of the strehl ratio achieved and the stability of the point spread function. Alternative techniques to the point spread function calibration and other problems like anisoplanaticism are briefly reviewed.

Citation Download Citation

Eric M. Tessier "Analysis and calibration of natural guide star adaptive optics data", Proc. SPIE 2534, Adaptive Optical Systems and Applications, (25 August 1995); https://doi.org/10.1117/12.217736

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