7 March 2003 Two-channel, robotic CCD-camera
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Abstract
We present the design of a compact two-channel CCD-camera for the 0.8 m Cassegrain telescope operated at the Wendelstein Observatory. To achieve a high efficiency this camera is equipped with two channels, operating in the wavelength range of 400 - 540 nm and 570 - 900 nm, respectively. Each channel is provided with a filter slider for three positions, an independent photometric shutter, and a 2k x 2k CCD (80% peak efficiency). The camera can simultaneously record a red and a blue image of its 10.7' x 10.7' field of view. In addition it has an offset guider and supports robotic operation: Active cooling provides the operating temperature of 160 K avoiding the use of liquid nitrogen. Both CCDs share a single cryostat and can be aligned during operation. The complete vacuum control including pumping and cryopump cleaning can be operated remotely.
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Claus A. Goessl, Claus A. Goessl, Wolfgang Mitsch, Wolfgang Mitsch, Werner Altmann, Werner Altmann, Ulrich Hopp, Ulrich Hopp, Heinz Barwig, Heinz Barwig, } "Two-channel, robotic CCD-camera", Proc. SPIE 4841, Instrument Design and Performance for Optical/Infrared Ground-based Telescopes, (7 March 2003); doi: 10.1117/12.460321; https://doi.org/10.1117/12.460321
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