22 July 2010 Large format filter changer mechanism for the dark energy survey
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Abstract
The Dark Energy Survey is a Stage III Dark Energy Experiment that will obtain cosmological parameters by combining four observational techniques; Galaxy Clusters, Weak Lensing, Type Ia Supernovae and Baryon Acoustic Oscillations. The observations will be performed with a new wide field camera (DECam) that will be placed on the Blanco 4 m telescope at CTIO. Here we describe the large format (600 mm clear aperture) Filter Changer Mechanism (FCM) for the Dark Energy Survey Camera (DECam). The FCM, based on the Pan-STARRS design, is the largest ever constructed. Fabrication of the filter changer has been completed and it has been tested under realistic conditions.
© (2010) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
G. Tarlé, B. Bigelow, D. Boprie, C. Cooper, E. Dede, W. Lorenzon, B. Nord, M. Schubnell, C. Weaverdyck, "Large format filter changer mechanism for the dark energy survey", Proc. SPIE 7739, Modern Technologies in Space- and Ground-based Telescopes and Instrumentation, 77393L (22 July 2010); doi: 10.1117/12.857426; https://doi.org/10.1117/12.857426
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KEYWORDS
Optical filters

Aluminum

Switches

Telescopes

Temperature metrology

Cameras

Image filtering

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