Physics – Optics
Scientific paper
May 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011aas...21813202b&link_type=abstract
American Astronomical Society, AAS Meeting #218, #132.02; Bulletin of the American Astronomical Society, Vol. 43, 2011
Physics
Optics
Scientific paper
Las Cumbres Observatory Global Telescope (LCOGT) is developing a world-wide network of optical telescopes dedicated to time-domain astronomy. In a few years, the network will consist of more than twenty 0.4m telescopes, about fifteen 1m telescopes, and two 2m telescopes, all of which will initially be equipped for both high-speed and traditional CCD imaging. Instruments for high-speed applications are described in Bianco et al. (this session). Here we describe LCOGT's instruments for relatively wide-field imaging at moderate time cadence. The most notable of these is the "Sinistro" camera system being built for the 1m network. It consists of corrector optics, filter changer, photometric shutter, 16 Mpix CCD camera, and custom CCD controller. Each Sinistro component is optimized for precision photometric measurements, and the system provides a large critically sampled field to the full CCD, rapid access to as many as 21 different filters, minimized shutter overhead, flexible high-speed readout, support for multiple independent regions of interest, the ability to autoguide independently of camera focus, precision CCD temperature control and telemetry, and a dry nitrogen filter environment.
Brown Timothy M.
Burleson Ben
de Vera J.
Dubberley M.
Haldeman B.
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