Wide-field camera for the United Kingdom Infrared Telescope
Wide-field camera for the United Kingdom Infrared Telescope
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英国红外望远镜宽视场相机
DOI：
10.1117/12.395449
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发表时间：
2000
期刊：
影响因子：
--
通讯作者：
T. Hawarden
中科院分区：
文献类型：
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作者：
D. Henry;E. Ettedgui;M. Casali;R. Bennett;A. Bridger;D. Ives;R. G. Rae;T. Hawarden
本文介绍了位于夏威夷莫纳克亚山的3.8米英国红外望远镜（UKIRT）的一台新型宽视场红外相机。该相机目前正在英国天文技术中心设计，将包括4个2048 × 2048像素的焦平面阵列红外探测器，工作波长范围为1-2.5微米。光学器件提供1度直径校正视场和每像素0.4弧秒的像素尺度。一种新颖的Schmnidt型光学设计允许大视场成像具有优异的图像质量。光学设计包括冷光阑，以最大限度地抑制背景辐射和杂散光。将使用精确的微步进来改进采样。将使用四个并行数据采集和处理通道来科普预期的大数据速率。据设想，一旦WFCAM投入运行，UKIRT的很大一部分时间将用于大面积天空调查，从而产生一个包含数亿物体的独特红外目录。
This paper describes an ambitious new wide field IR camera for the 3.8m UK IR Telescope (UKIRT), located on Mauna Kea, Hawaii. The camera, currently under design at the UK Astronomy Technology Center, will include 4 2048 by 2048 pixel focal plane array IR detectors operating over a wavelength range of 1-2.5 micrometers . The optics provide a 1 degree diameter corrected field of view and a pixel scale of 0.4 arcsec per pixel. A novel Schmnidt type optical design allows the large field to be imaged with excellent image quality. The optical design includes a cold stop to maximize rejection of background radiation and stray light. Precise microstepping will be used to improve sampling. Four parallel data acquisition and processing channels will be used to cope with the large data rates expected. It is envisaged that a substantial fraction of UKIRT time will be devoted to large area sky surveys once WFCAM is operational, resulting in a unique IR catalogue containing hundreds of millions of objects.