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Design and performance of the Keck Angle Tracker

Show simple item record Crawford, Samuel L. Ragland, S. Booth, A. Colavita, M. M. Hovland, E. 2006-08-24T20:32:07Z 2006-08-24T20:32:07Z 2006-05-24
dc.identifier.citation SPIE Conference Proceedings, Orlando, Florida, May 24-30, 2006. en
dc.identifier.clearanceno 06-1954
dc.description.abstract The Keck Angle Tracker (KAT) is a key subsystem in the NASA-funded Keck Interferometer at the Keck Observatory on the summit of Mauna Kea in Hawaii. KAT, which has been in operation since the achievement of first fringes in March 2001, senses the tilt of the stellar wavefront for each of the beams from the interferometer telescopes and provides tilt error signals to fast tip/tilt mirrors for high-bandwidth, wavefront tilt correction. In addition, KAT passes low-bandwidth, desaturation offsets to the adaptive optics system of the Keck telescopes to correct for slow pointing drifts. We present an overview of the instrument design and recent performance of KAT in support of the V2 science and nulling observing modes of the Keck Interferometer. en
dc.description.sponsorship NASA/JPL en
dc.format.extent 511097 bytes
dc.format.mimetype application/pdf
dc.language.iso en_US en
dc.publisher Pasadena, CA : Jet Propulsion Laboratory, National Aeronautics and Space Administration, 2006. en
dc.subject angle tracking en
dc.subject stellar interferometer en
dc.subject infrared detectors en
dc.subject adaptive optics en
dc.title Design and performance of the Keck Angle Tracker en
dc.type Preprint en

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