Share Email Print
cover

Proceedings Paper

Frame selection techniques for the Magellan adaptive optics VisAO camera
Author(s): Jared R. Males; Laird M. Close; Derek Kopon; Victor Gasho; Katherine Follette
Format Member Price Non-Member Price
PDF $14.40 $18.00

Paper Abstract

The Magellan AO system will begin commissioning in early 2012. Its VisAO camera will provide 20 mas FWHM images with mean Strehl ratios of ~ 0.2 in R band on a 6.5m telescope. Depending on seeing conditions, Strehl ratio may reach temporary peaks as high as 0.5 at these wavelengths. To take advantage of these brief periods of high performance, we plan to adopt lucky imaging style data taking and reduction techniques. As part of this effort we have developed a novel real-time frame selection technique, which will use AO system telemetry and a fast shutter to limit CCD exposure to these very brief moments of higher Strehl. Here we describe the expected benefits of our frame selection techniques in various operating modes. We also present the results of laboratory characterization of the shutter, and describe the performance of predictive algorithms used to control it.

Paper Details

Date Published: 15 July 2010
PDF: 13 pages
Proc. SPIE 7736, Adaptive Optics Systems II, 773660 (15 July 2010); doi: 10.1117/12.858055
Show Author Affiliations
Jared R. Males, Steward Observatory, The Univ. of Arizona (United States)
Laird M. Close, Steward Observatory, The Univ. of Arizona (United States)
Derek Kopon, Steward Observatory, The Univ. of Arizona (United States)
Victor Gasho, Steward Observatory, The Univ. of Arizona (United States)
Katherine Follette, Steward Observatory, The Univ. of Arizona (United States)


Published in SPIE Proceedings Vol. 7736:
Adaptive Optics Systems II
Brent L. Ellerbroek; Michael Hart; Norbert Hubin; Peter L. Wizinowich, Editor(s)

© SPIE. Terms of Use
Back to Top