TY - GEN
T1 - Wide field AO correction
T2 - Adaptive Optics Systems II
AU - De Xivry, Gilles Orban
AU - Rabien, Sebastian
AU - Bari, Lothar
AU - Esposito, Simone
AU - Gaessler, Wolfgang
AU - Hart, Michael
AU - Deysenroth, Matthias
AU - Gemperlein, Hans
AU - Strüder, Lothar
AU - Ziegleder, Julian
PY - 2010
Y1 - 2010
N2 - Wide field correction allowing large field to benefit from adaptive optics (AO) is challenging in more than one aspect. We address here the wavefront sensor (WFS) detector side where, in addition to high sensitivity and low noise, the simultaneous detection of multiple laser beacons and the large number of sub-apertures in a ShackHartmann WFS require a detector to have a large imaging area while preserving a very high readout frame rate. The detector considered has a frame area of 264×264 pixels with a pixel size of 48 microns. By splitting the image into two framestore areas during readout, repetition rates of more than 1000 frames per second can be achieved. The electronic noise contribution is approximately 3 electrons at the operating temperature. We therefore analyze its performances, showing it fulfills the requirements, in a wavefront sensing application: the measurement of centroids in the case of a Shack-Hartmann WFS for the ARGOS AO project.
AB - Wide field correction allowing large field to benefit from adaptive optics (AO) is challenging in more than one aspect. We address here the wavefront sensor (WFS) detector side where, in addition to high sensitivity and low noise, the simultaneous detection of multiple laser beacons and the large number of sub-apertures in a ShackHartmann WFS require a detector to have a large imaging area while preserving a very high readout frame rate. The detector considered has a frame area of 264×264 pixels with a pixel size of 48 microns. By splitting the image into two framestore areas during readout, repetition rates of more than 1000 frames per second can be achieved. The electronic noise contribution is approximately 3 electrons at the operating temperature. We therefore analyze its performances, showing it fulfills the requirements, in a wavefront sensing application: the measurement of centroids in the case of a Shack-Hartmann WFS for the ARGOS AO project.
KW - Adaptive optics wavefront detector
KW - Centroids calculation
KW - PnCCD
UR - http://www.scopus.com/inward/record.url?scp=77957829868&partnerID=8YFLogxK
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U2 - 10.1117/12.857230
DO - 10.1117/12.857230
M3 - Conference contribution
AN - SCOPUS:77957829868
SN - 9780819482266
T3 - Proceedings of SPIE - The International Society for Optical Engineering
BT - Adaptive Optics Systems II
Y2 - 27 June 2010 through 2 July 2010
ER -