Large format filter changer mechanism for the dark energy survey

Tarlè, G.; Bigelow, Bruce C.; Boprie, D.; Cooper, Curt; Dede, Ercan M.; Lorenzon, W.; Nord, B.; Schubnell, M.; Weaverdyck, Curtis

doi:10.1117/12.857426

Cited by 6 publications

(3 citation statements)

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“…The DECam Filter Changer Mechanism (FCM) was designed and fabricated by the DES group at the University of Michigan (Tarlé et al 2010). The design was derived from the design of the PanSTARRS FCM.…”

Section: Filter Changermentioning

confidence: 99%

“…Asymmetric machining of this plate to form the channel structure that houses the remainder of the assembly was found to cause a significant out-of-plane distortion or bow of the plate upwardof 1-3 mm. Thus, a fabrication process was developed (Tarlé et al 2010) that minimized these distortion effects and achieved the required flatness of 0.25 mm.…”

Section: Filter Changer Fabrication and Testingmentioning

confidence: 99%

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The Dark Energy Camera

Flaugher¹,

Diehl²,

Honscheid³

et al. 2015

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588

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The Dark Energy Camera is a new imager with a 2°. 2 diameter field of view mounted at the prime focus of the Victor M. Blanco 4m telescope on Cerro Tololo near La Serena, Chile. The camera was designed and constructed by the Dark Energy Survey Collaborationand meets or exceeds the stringent requirements designed for the widefield and supernova surveys for which the collaboration uses it. The camera consists of a five-element optical corrector, seven filters, a shutter with a 60 cm aperture, and a charge-coupled device (CCD) focal plane of 250 μm thick fully depleted CCDs cooled inside a vacuum Dewar. The 570 megapixel focal plane comprises 62 2k × 4k CCDs for imaging and 12 2k × 2k CCDs for guiding and focus. The CCDs have 15 μm × 15 μm pixels with a plate scale of 0 263 pixel −1. A hexapod system provides state-of-the-art focus and alignment capability. The camera is read out in 20 s with 6-9 electronreadout noise. This paper provides a technical description of the cameraʼs engineering, construction, installation, and current status.

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Section: Filter Changermentioning

confidence: 99%

Section: Filter Changer Fabrication and Testingmentioning

confidence: 99%

The Dark Energy Camera

Flaugher¹,

Diehl²,

Honscheid³

et al. 2015

Self Cite

927

588

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show abstract

“…The DECam [3] will have a 3 square-degree field of view accomplished using a new optical corrector with one of the largest lenses ever produced for optical astrophysics, and an 8-filter housing [4] that will contain SDSS g,r,i,z, and Y filters provided by Asahi, Intl. The working diameter of the filters is 620 mm.…”

Section: Introductionmentioning

confidence: 99%

Testing the Dark Energy Camera on a telescope simulator

et al. 2010

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The Dark Energy Camera is a new prime-focus instrument to be delivered to the Blanco 4-meter telescope at the Cerro Tololo Inter-American Observatory (CTIO) in 2011. Construction is in-progress at this time at Fermilab. In order to verify that the camera meets technical specifications for the Dark Energy Survey and to reduce the time required to commission the instrument while it is on the telescope, we are constructing a "Telescope Simulator" and performing full system testing prior to shipping to CTIO. This presentation will describe the Telescope Simulator and how we use it to verify some of the technical specifications.

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The Dark Energy Survey Camera (DECam)

Diehl

2012

Physics Procedia

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Large format filter changer mechanism for the dark energy survey

Cited by 6 publications

References 0 publications

The Dark Energy Camera

The Dark Energy Camera

Testing the Dark Energy Camera on a telescope simulator

The Dark Energy Survey Camera (DECam)

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