@inproceedings{91b52328fde142d7ab7e711a99b6f215,
title = "Whack-a-speckle: Focal plane wavefront sensing in theory and practice with a deformable secondary mirror and 5-micron camera",
abstract = "Long exposures from adaptive optic systems show a diffraction limited core superimposed on a halo of uncorrected light from a science target, and the addition of various long-lived speckles that arise from uncorrected aberrations in the telescope system. The presence of these speckles limit the detection of extra-solar planets at a few diffraction widths from the primary source. Focal plane wavefront sensing uses the deformable secondary mirror of the MMT adaptive optics system to systematically remove the presence of long-lived speckles in a high-contrast image, and also test for the incoherent source that represents a separate astronomical target nearby. We use the Clio 5 micron camera (with its coronagraphic capabilities) to modulate long lived speckles and present initial on-sky results of this technique.",
keywords = "Adaptive optics, Mid infra-red, Wavefront sensing",
author = "Kenworthy, {Matthew A.} and Hinz, {Philip M.} and Angel, {J. Roger P.} and Heinze, {Ari N.} and Suresh Sivanandam",
year = "2006",
doi = "10.1117/12.672577",
language = "English (US)",
isbn = "081946337X",
series = "Proceedings of SPIE - The International Society for Optical Engineering",
booktitle = "Advances in Adaptive Optics II",
note = "Advances in Adaptive Optics II ; Conference date: 24-05-2006 Through 31-05-2006",
}