Static telescope aberration measurement and correction using lucky imaging techniques

Details Static telescope aberration measurement and correction using lucky imaging techniques Static telescope aberration measurement and correction using lucky imaging techniques

Jul 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008spie.7018e.114l&link_type=abstract

Advanced Optical and Mechanical Technologies in Telescopes and Instrumentation. Edited by Atad-Ettedgui, Eli; Lemke, Dietrich.

Computer Science

Scientific paper

A procedure has been developed to compute static aberrations after the PSF measured with the lucky imaging technique, using a nearby star as the point source to probe the optical system. This PSF is iteratively turned into a phase map at the pupil using the Gerchberg-Saxton algorithm, and then converted to the adequate actuation information for a deformable mirror having low actuator number but large stroke capability. The main advantage of this procedure is related with the capability of correcting static aberration at the specific pointing direction and without the need of a wavefront sensor.

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