%0 Journal Article
%T An Infrared Camera for Leuschner Observatory and the Berkeley Undergraduate Astronomy Lab
%A James R. Graham
%A Richard R. Treffers
%J Physics
%D 2001
%I arXiv
%R 10.1086/320284
%X We describe the design, fabrication, and operation of an infrared camera which is in use at the 30-inch telescope of the Leuschner Observatory. The camera is based on a Rockwell PICNIC 256 x 256 pixel HgCdTe array, which is sensitive from 0.9-2.5 micron. The primary purpose of this telescope is for undergraduate instruction. The cost of the camera has been minimized by using commercial parts whereever practical. The camera optics are based on a modified Offner relay which forms a cold pupil where stray thermal radiation from the telescope is baffled. A cold, six-position filter wheel is driven by a cryogenic stepper motor, thus avoiding any mechanical feed throughs. The array control and readout electronics are based on standard PC cards; the only custom component is a simple interface card which buffers the clocks and amplifies the analog signals from the array.
%U http://arxiv.org/abs/astro-ph/0102219v1