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Proceedings Paper

Nine-channel tip/tilt detector at the CHARA Array
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Paper Abstract

A new CCD based tip/tilt detection system was installed in the CHARA array on August 21, 2005. The new system can serve six telescopes simultaneously and is sensitive to a wavelength as long as 1 μm. The tip/tilt camera is based on an E2V CCD39-01, a small (80×80) back illuminated frame transfer device with a pixel size of 24×24 μm2. The measured read-out noise and conversion gain of the camera is 6.4 e- at 384 kpx s-1 and 1.1 e-/ADU, respectively at a temperature of -30 C°. Nine quad-pixel channels have been created on the CCD in a 10×10 pixel sub-array close to one of the read out amplifiers. Vignetting on the quad-pixel channels is negligible. Crosstalk between adjacent channels has been eliminated. The image scale on the CCD is 3.46 arcsecs/pixel. The limiting magnitude is expected to be V=12 at 20 ms integration time under good seeing conditions.

Paper Details

Date Published: 29 June 2006
PDF: 7 pages
Proc. SPIE 6268, Advances in Stellar Interferometry, 62683T (29 June 2006); doi: 10.1117/12.671855
Show Author Affiliations
Laszlo Sturmann, CHARA, Georgia State Univ. (United States)
Judit Sturmann, CHARA, Georgia State Univ. (United States)
Theo ten Brummelaar, CHARA, Georgia State Univ. (United States)
Harold A. McAlister, CHARA, Georgia State Univ. (United States)


Published in SPIE Proceedings Vol. 6268:
Advances in Stellar Interferometry
John D. Monnier; Markus Schöller; William C. Danchi, Editor(s)

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