Replacement Detectors for the 3.5m Telescope Double Imaging Spectrograph

摘要这笔拨款将用于更换阿帕奇角天文台3.5米望远镜双成像光谱仪（DIS）上的红蓝通道相机。目前相机中的探测器已经过时，噪声高，每像素12到40个电子，而新探测器每像素大约有5个电子，外观缺陷，量子效率低。替代设备将更大，为1048 x 1320像素，而目前的蓝色通道相机为512 x 512像素，红色通道相机为800 x 800像素，并为望远镜提供更小的平板尺寸。

ABSTRACTThis grant will be used to replace the red and blue channel cameras on the Double Imaging Spectrograph (DIS) of the 3.5 meter telescope at the Apache Point Observatory. The detectors in the present cameras are outdated, having high noise, 12 to 40 electrons per pixel versus approximately 5 electrons per pixel for the new detectors, cosmetic defects, and low quantum efficiency. The replacement devices will be larger, 1048 x 1320 pixels versus 512 x 512 for the present blue channel camera and 800 x 800 pixels for the red channel camera, and provide a smaller plate-scale for the telescope.