ASTRO-F mission
ASTRO-F mission
复制标题
DOI：
10.1117/12.461581
复制
发表时间：
2003-03
期刊：
影响因子：
--
通讯作者：
H. Shibai
中科院分区：
文献类型：
--
作者：
H. Shibai
ASTRO-F使命是日本第一颗专门用于红外天文学的卫星。望远镜有一个直径70厘米的镜子，并通过机械冷却系统辅助超流氦冷却到6 K。该项目的主要目的是，通过在2至200微米波长范围内进行深空广场调查，以及在红外波长范围内进行广泛的观测研究，调查早期宇宙中星系的诞生和演变。空间分辨率和点源灵敏度分别与孔径衍射极限和自然背景和/或混淆极限的空间分辨率和点源灵敏度几乎相同。在远红外波段，ASTRO-F将进行一次全天空观测，类似于红外天文卫星观测，其灵敏度高几十倍，空间分辨率高几倍。在近红外和中红外波段，将对预先选定的天空部分进行大面积天空调查。除了这些光度测量外，还提供所有波段的低分辨率光谱测量能力。ASTRO-F使命将为下一代先进观测站，例如Herschel使命和NGST，产生一个基本数据库，并将凭借其广阔的天空覆盖范围补充SIRTF使命。概述了ASTRO-F卫星的发展现状、观测计划和数据处理/分析软件。M-V火箭定于2004年2月发射。
ASTRO-F mission is the first Japanese satellite dedicated to infrared astronomy. The telescope has a 70cm diameter mirror, and is cooled down to 6 K with super-fluid helium assisted by a mechanial cooler system. The primary purpose of this project is to investigate the birth and evolution of galaxies in the early universe through deep, wide-field surveys at wavelengths ranging from 2 to 200 μm, as well as a wide field of observational studies in the infrared wavelength region. The spatial resolution and the point source sensitivity are nearly the same as those of the aperture diffraction limit and the natural background and/or confusion limit, respectively. In the far-infrared wavelength band, ASTRO-F will conduct an all-sky survey like the IRAS survey with several tens of times higher sensitivity and several times better spatial resolution. In the near- and mid-infrared, wide area sky-surveys will be conducted over pre-selected portions of the sky. In addition to these photometric surveys, low-resolution spectroscopic capabilities are available for all wavelength bands. The ASTRO-F mission will produce a fundamental database for the next generation of advanced observatories, for example, the Herschel mission, and NGST, and will complement the SIRTF mission by virtue of its wide sky coverage. The current development status of the ASTRO-F spacecraft, the observation plan, and the data reduction/analysis software are summarized. The launch by an M-V rocket is scheduled for February 2004.