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Proceedings Paper

Comparison of LSST and DECam wavefront recovery algorithms
Author(s): Bo Xin; Aaron Roodman; George Angeli; Chuck Claver; Sandrine Thomas
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Paper Abstract

We make a detailed quantitative comparison of the wavefront recovery algorithms between those developed for Dark Energy Camera (DECam) and the Large Synoptic Survey Telescope (LSST). Samples used in this study include images of out of focus stars collected by the DECam at the Blanco 4-meter telescope and artificial simulated donut images. The data from DECam include wavefront images collected by the wavefront sensors and out-of-focus images where the entire DECam sensor array is used. For simulated images, we have used both the forward Fraunhofer diffraction and a LSST-like ZEMAX optical model where the images are convolved with Kolmogorov atmosphere. All samples are analyzed with the forward wavefront retrieval algorithm developed for DECam and the transport of intensity algorithm for LSST. Good quantitative agreement between results by the two implemented algorithms is observed.

Paper Details

Date Published: 27 July 2016
PDF: 10 pages
Proc. SPIE 9906, Ground-based and Airborne Telescopes VI, 99064J (27 July 2016); doi: 10.1117/12.2234456
Show Author Affiliations
Bo Xin, LSST (United States)
Aaron Roodman, SLAC National Accelerator Lab. (United States)
George Angeli, LSST (United States)
Chuck Claver, LSST (United States)
Sandrine Thomas, LSST (United States)

Published in SPIE Proceedings Vol. 9906:
Ground-based and Airborne Telescopes VI
Helen J. Hall; Roberto Gilmozzi; Heather K. Marshall, Editor(s)

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