光学-近红外相机CASCAM的机械设计

光学近红外相机CASCAM(Chinese Academy of Sciences．Camera)采用光学CCD和近红外阵列HAWMH-1(HgCdTe Astronomical Wide Area Infrared Imaging)探测器，配备兴隆2．16m望远镜可同时进行光学、近红外成像和偏振观测。CASCAM的机械系统主要包括光学箱、真空箱以及致冷设计。其中光学箱是相机光学系统和探测器的载体，同时防止来自光学箱外部的红外热辐射；真空箱位于光学箱外部，它是整个系统的机械支撑，保证相机有良好的真空密封性能，并和真空泵、冷冻机一起构成了相机的致冷系统。

Mechanical Design of Optic-Infrared Camera CASCAM

Optical-Near Infrared Camera CASCAM (Chinese Academy of Sciences, Camera), employing with CCD and near infrared array HAWAII-1, is designed to make imaging simultaneously at the optical and infrared wavelengths in the 2.16 m optical telescope located at XingLong station. The system mechanical design includes optical box, vacuum box and cooling system. The optical box is the platform of optics and detectors, and it prevents thermal emission from outside effectively. The vacuum box is outside of the optical box, which can keep good vacuum at a level of 10-6 Torr. The vacuum box, vacuum pump and a refrigerator are composed as the cooling system of the camera.