Physics – Optics
Scientific paper
Jan 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aas...21346027r&link_type=abstract
American Astronomical Society, AAS Meeting #213, #460.27; Bulletin of the American Astronomical Society, Vol. 41, p.371
Physics
Optics
Scientific paper
LSST is a wide field (10 sq. deg) survey instrument with active optics control and will provide better than 0.2 arcsecond instrumental contribution to imaging across the field. A principle requirement for achieving this is a very flat focal plane ( 10 microns PV) comprised of nearly 200 individual sensors, together with active feedback derived from 4 curvature wavefront sensors at the corners of the focal plane. We present our plans for building up a modular, flat focal plane for LSST and how flatness under operational conditions will be assured. The importance for delivering a flat focal plane will be underscored by discussing the specific structure of the LSST beam in the presence of residual wavefront error, and what sorts of systematics to the point spread function can be tolerated, given LSST's weak lensing mission.
Chang Chulhoon
Kahn Steve M.
LSST Camera Team
Nordby Mark
O'Connor Padraig
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