Omega Prime: The wide-field near-infrared camera for the 3.5 m telescope of the Calar Alto Observatory.

被引：39

作者：

Bizenberger, P ^{[1
]}

McCaughrean, M ^{[1
]}

Birk, C ^{[1
]}

Thompson, D ^{[1
]}

Storz, C ^{[1
]}

机构：

[1] Max Planck Inst Astron, D-69117 Heidelberg, Germany

来源：

INFRARED ASTRONOMICAL INSTRUMENTATION, PTS 1-2 | 1998年 / 3354卷

关键词：

HAWAII array; near infrared; wide field camera;

D O I：

10.1117/12.317219

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Omega Prime is a wide-field near-infrared camera for the prime focus of the Calar Alto 3.5 m telescope in Spain. The detector is a 1024 x 1024 pixel HAWAII array made by Rockwell. The image scale is 0.4 arcsec/pixel, giving a field of view of 6.8 x 6.8 arcmin. In order to maximize the throughput, the optics were designed as a prime focus corrector with only three lenses. This simple design without a cold pupil provides an excellent image quality over the entire field of view. To reduce thermal background at wavelengths longer than 2.2 mu m, Omega Prime has a series of cold internal baffles and an additional toroidal mirror outside the dewar. This annular reflector causes detector pixels to "see" mostly the cold interior of the camera. The camera has been in operation since May 1996 and has been used for a variety of scientific programs, including a very deep K' survey covering 1000 square arcmin to a 5 sigma limit for point-sources of 20.5 magnitude.

引用

页码：825 / 832

页数：8