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Static telescope aberration measurement using lucky imaging techniques

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Abstract

A procedure has been developed to compute static aberrations once the telescope PSF has been measured with the lucky imaging technique, using a nearby star close to the object of interest 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 appropriate 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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Acknowledgements

This work has been funded by “Programa Nacional I+D+i” (Project AYA 2009-13075) of the “Ministerio de Educación y Ciencia”, by ACIISI “Camera 3DTV” project and by the “European Regional Development Fund” (ERDF).

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Authors and Affiliations

  1. University of La Laguna, La Laguna, Spain

    Marcos López-Marrero, José Gil Marichal-Hernández & José Manuel Rodríguez-Ramos

  2. Instituto de Astrofísica de Canarias, Tenerife, Canary Island, Spain

    Luis Fernando Rodríguez-Ramos

Authors
  1. Marcos López-Marrero
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  2. Luis Fernando Rodríguez-Ramos
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  3. José Gil Marichal-Hernández
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  4. José Manuel Rodríguez-Ramos
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Correspondence to Marcos López-Marrero.

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López-Marrero, M., Rodríguez-Ramos, L.F., Marichal-Hernández, J.G. et al. Static telescope aberration measurement using lucky imaging techniques. Exp Astron 34, 1–11 (2012). https://doi.org/10.1007/s10686-012-9291-4

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  • DOI: https://doi.org/10.1007/s10686-012-9291-4

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