Physics – Optics
Scientific paper
Dec 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aas...21113715k&link_type=abstract
American Astronomical Society, AAS Meeting #211, #137.15; Bulletin of the American Astronomical Society, Vol. 39, p.981
Physics
Optics
Scientific paper
The LSST Telescope and Site has been designed to meet the stringent goals of the survey in terms of image quality and throughput. The telescope system delivers 0.25 arc sec FWHM seeing to the overall system image quality error budget. An active optics control system has been identified to measure wavefront quality in the focal plane and use this to reconstruct the figure and alignment errors in the optics. The primary-tertiary monolithic mirror is being fabricated at the Steward Observatory Mirror Lab using their structured borosilicate spin casting technology. Fabrication of the mold is underway, with "high fire” scheduled for spring 2008, and final delivery in late 2011. Baseline designs for active mirror support and optical testing for the monolith and conventional secondary mirror systems have been developed. The telescope is compact, stiff, and agile to maximize observing efficiency. The 300 ton structure can make 3.5 degree moves (at a 30 degree zenith angle) on the sky in less than 5 seconds. The dome will track and slew to follow the telescope pointing with minimal power. The summit facility has been designed to support operations and maintenance for minimal down time
Andrew John
Barr Jordi
Claver Charles Frederick
Gressler William
Kingsley Jeff
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