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Nine-channel tip/tilt detector at the CHARA Array

机译:在Chara阵列的九通道尖端/倾斜探测器

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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?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.
机译:2005年8月21日在Chara阵列中安装了新的基于CCD的尖端/倾斜检测系统。新系统可以同时为六个望远镜服务,并且对波长敏感,只要为1μm。 尖端/倾斜摄像机基于E2V CCD39-01,一个小(80°80)背照明帧传输装置,其像素大小为24ΩΩ24μm2。 测量的读出噪声和相机的转换增益分别在-30c的温度下分别为384 kpx s-1和1.1 e-/ adu。 在CCD上在10?10像素子阵列中创建了九个像素通道,接近读出放大器之一。 四极像电子通道上的渐晕可忽略不计。 相邻通道之间的串扰已被淘汰。 CCD上的图像刻度为3.46个AccSECS /像素。 预期限制幅度在良好的见条件下在20毫秒积分时间为v = 12。

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