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Proceedings Paper

Assembly of the Dark Energy Survey CCD Imager
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Paper Abstract

The Dark Energy Camera (DECam) is the new wide field prime-focus imager for the Blanco 4m telescope at CTIO. This instrument is a 2.2 sq. deg. camera with a 45 cm diameter focal plane consisting of 62 2k × 4k CCDs and 12 2k × 2k CCDs and was developed for the Dark Energy Survey that will start operations at CTIO in 2011. DECam includes the vessel shell, the optical window cell, the CCDs with their readout electronics and vacuum interface, the focal plane support plate and its mounts, and the cooling system and thermal controls. Assembly of the imager, alignment of the focal plane and installation of the CCDs are described. During DECam development a full scale prototype was used for multi-CCD readout tests. This test vessel went through several stages as the CCDs and related hardware progressed from early prototypes to final production designs.

Paper Details

Date Published: 26 July 2010
PDF: 10 pages
Proc. SPIE 7739, Modern Technologies in Space- and Ground-based Telescopes and Instrumentation, 77393M (26 July 2010); doi: 10.1117/12.857480
Show Author Affiliations
Greg Derylo, Fermi National Accelerator Lab. (United States)
Herman Cease, Fermi National Accelerator Lab. (United States)
H. Thomas Diehl, Fermi National Accelerator Lab. (United States)
Juan Estrada, Fermi National Accelerator Lab. (United States)
Brenna Flaugher, Fermi National Accelerator Lab. (United States)


Published in SPIE Proceedings Vol. 7739:
Modern Technologies in Space- and Ground-based Telescopes and Instrumentation
Eli Atad-Ettedgui; Dietrich Lemke, Editor(s)

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