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Nine-Channel Tip/Tilt Detector at the CHARA Array

机译:CHARA阵列的九通道倾斜/倾斜检测器

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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 x 80) back illuminated frame transfer device with a pixel size of 24 x 24 μm~2. 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 x 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.
机译:2005年8月21日,在CHARA阵列中安装了一个新的基于CCD的倾斜/倾斜检测系统。该新系统可以同时为六台望远镜提供服务,并且对长达1μm的波长敏感。倾斜/倾斜摄像机*基于E2V CCD39-01,这是一种小型(80 x 80)背光帧传输设备,像素大小为24 x 24μm〜2。在384 kpx s〜(-1)和-30°C的温度下,相机测得的读出噪声和转换增益分别为6.4 e〜-和1.1 e〜-/ ADU。在CCD上,在靠近读出放大器之一的10 x 10像素子阵列中创建了九个四像素通道。四像素通道上的渐晕可以忽略不计。消除了相邻通道之间的串扰。 CCD上的图像比例为3.46 arcsecs /像素。在良好观看条件下,在20 ms积分时间下,预期的极限大小为V = 12。

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