The UKIRT Wide Field Camera

摘要

The Wide Field Camera (WFCAM) has recently (in 2004) been commissioned at the United Kingdom Infra Red Telescope (UKIRT) in Hawaii. The complete system consists of a new IR camera with integral autoguider and a new tip/tilt secondary mirror unit. The optical system operates over 0. 7 - 2. 4 μm and has a large corrected field of view with a 0.9° diameter. The focal plane is sparsely populated with 4 2K×2K Rockwell HAWAII-2 detectors, giving a pixel scale of 0.4 arcsec/pixel. A separate autoguider CCD is integrated onto the focal plane unit. This paper summarises the performance of the camera system and more specifically reports on some of the lesser known IR detector characteristics, such as the reset anomaly and inter-channel cross talk.