MIRAC2: a mid-infrared array camera for astronomy

被引：42

作者：

Hoffmann, WF ^{[1
]}

Hora, JL ^{[1
]}

Fazio, GG ^{[1
]}

Deutsch, LK ^{[1
]}

Dayal, A ^{[1
]}

机构：

[1] Univ Arizona, Steward Observ, Tucson, AZ 85721 USA

来源：

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

关键词：

astronomy; BIB; camera; infrared; instrumentation; mirac;

D O I：

10.1117/12.317327

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

MIRAC2 was built for ground-based astronomy at Steward Observatory, University of Arizona and Harvard-Smithsonian Center for Astrophysics. It utilizes a Rockwell HF-16 128x128 arsenic-doped silicon blocked-impurity-band (BIB) hybrid array with a wavelength range of 2 to 28 mu m operating in a liquid helium-cooled cryostat at 5 K. Reflective optics, and externally actuated detector and pupil slides provide a variety of magnification and focal ratio settings without opening the cryostat. Nominal settings at the NASA IRTF and UKIRT give diffraction-limited imaging with .34 and .27 arcsec/pixel, respectively. The sensitivity on the IRTF at 11.7 mu m, 10% bandwidth filter, chop-nod, source in one beam, I sigma, one minute total time is 25 mJy/arcsec surface brightness and 43 mJy point source.

引用

页码：647 / 658

页数：12