29 June 2006 Nine-channel tip/tilt detector at the CHARA Array
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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.
© (2006) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Laszlo Sturmann, Laszlo Sturmann, Judit Sturmann, Judit Sturmann, Theo ten Brummelaar, Theo ten Brummelaar, Harold A. McAlister, Harold A. McAlister, } "Nine-channel tip/tilt detector at the CHARA Array", Proc. SPIE 6268, Advances in Stellar Interferometry, 62683T (29 June 2006); doi: 10.1117/12.671855; https://doi.org/10.1117/12.671855


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