Ground-based commissioning of FLITECAM - art. no. 701411

被引:6
|
作者
Smith, Erin C. [1 ]
McLean, Ian S. [1 ]
机构
[1] Univ Calif Los Angeles, Dept Phys & Astron, Los Angeles, CA 90095 USA
来源
GROUND-BASED AND AIRBORNE INSTRUMENTATION FOR ASTRONOMY II, PTS 1-4 | 2008年 / 7014卷
关键词
airborne astronomy; instrumentation; grisms; PAH features;
D O I
10.1117/12.788693
中图分类号
V [航空、航天];
学科分类号
08 ; 0825 ;
摘要
FLITECAM is a 1-5 micron spectrometer and camera developed at UCLA for NASA's Stratospheric Observatory for Infrared Astronomy (SOFIA). On SOFIA, FLITECAM will take advantage of lower backgrounds from 3-5 microns and will provide access to spectral regions completely or partially absorbed by water vapor at even the best ground-based sites. FLITECAM employs large cryogenic optics and an ALADDIN III 1024 x 1024 InSb detector to inscribe an 8 arcminute field of view with 0.48 arcsec/pixel spatial resolution. The optical components are cooled with liquid nitrogen and a liquid helium reservoir is used to establish an operational temperature of 30 K for the InSb array. FLITECAM has two primary observing modes, imaging and spectroscopy, A pupil-viewing mode, for examination of the primary mirror surface, and a high-speed snapshot mode for occultation observations are also provided. Ground-based commissioning of the instrument using the Shane 3-meter telescope at UCO/Lick Observatory has been completed successfully. In addition to broad-band filters, the imaging mode accommodates several narrow-band filters. A data reduction pipeline processes dithered image sets in real-time during the flight. The grism spectroscopy mode employs three direct-ruled KRS-5 grisms and fixed slits of either 1" x 60" or 2" x 60" to yield resolving powers (FWHM) of R similar to 1700 and 900 respectively. Observations are scripted using AORs (Astronomical Observation Requests) in both modes. A pilot survey of 3.3 micron emission in planetary nebulae performed with FLITECAM at UCO/Lick Observatory demonstrates the potential of the grism mode.
引用
收藏
页码:1411 / 1411
页数:12
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