9 July 1998 DEIMOS dewar and CCD mosaic
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The DEIMOS spectrograph, being designed and built by Lick Observatory, for the Keck-II telescope, requires a dewar system that can support a mosaic of eight 2K X 8K science CCDs and two 600 X 1200 CCDs for flexure control. The science CCD must be mounted on the mosaic backplane with a height difference of less than 10 (mu) . Inside the dewar the mosaic must translate in the focus direction plus or minus 1 millimeter and in the direction of the slit by 90 (mu) for flexure control. This system has now completed the design stage, with many of the subsystems having been prototyped, and is now in the later part of the fabrication stage.
© (1998) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
David J. Cowley, Trent Freeman, "DEIMOS dewar and CCD mosaic", Proc. SPIE 3355, Optical Astronomical Instrumentation, (9 July 1998); doi: 10.1117/12.316750; https://doi.org/10.1117/12.316750


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