Static telescope aberration measurement and correction using lucky imaging techniques

M. López Marrero; L. F. Rodríguez Ramos; J. M. Rodríguez Ramos

doi:10.1117/12.787413

23 July 2008 Static telescope aberration measurement and correction using lucky imaging techniques

M. López Marrero, L. F. Rodríguez Ramos, J. M. Rodríguez Ramos

Proceedings Volume 7018, Advanced Optical and Mechanical Technologies in Telescopes and Instrumentation; 70183L (2008) https://doi.org/10.1117/12.787413
Event: SPIE Astronomical Telescopes + Instrumentation, 2008, Marseille, France

Abstract

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.

Citation Download Citation

M. López Marrero, L. F. Rodríguez Ramos, and J. M. Rodríguez Ramos "Static telescope aberration measurement and correction using lucky imaging techniques", Proc. SPIE 7018, Advanced Optical and Mechanical Technologies in Telescopes and Instrumentation, 70183L (23 July 2008); https://doi.org/10.1117/12.787413

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