Development of a new mid-infrared instrument for the TAO 6.5-m Telescope
Development of a new mid-infrared instrument for the TAO 6.5-m Telescope
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为 TAO 6.5 米望远镜开发新型中红外仪器
DOI：
10.1117/12.856744
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发表时间：
2010
期刊：
影响因子：
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通讯作者：
Y. Yoshii
中科院分区：
文献类型：
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作者：
T. Miyata;S. Sako;Tomohiko Nakamura;K. Asano;M. Uchiyama;T. Onaka;I. Sakon;H. Kataza;Y. Ita;T. Aoki;M. Doi;T. Handa;D. Kato;K. Kawara;K. Kohno;M. Konishi;S. Koshida;T. Minezaki;N. Mitani;K. Motohara;T. Soyano;T. Tanabé;Masuo Tanaka;K. Tarusawa;Y. Yoshii
与空间观测相比，地面中红外观测有两个明显的优势，尽管灵敏度相对较低。一是高空间分辨率，二是监测能力。这些优势可以在即将到来的东京阿塔卡马大学天文台(TAO)下一个陆基红外项目中得到特别强调。由于TAO站点的低水汽(5640米)和大口径(6.5米)的望远镜，我们可以观测到30微米的空间分辨率为1角秒。这大约是目前太空望远镜的十倍。由于观测时间充裕，TAO对监测观测也很有用。为了利用这些优势，我们现在正在为TAO 6.5米望远镜开发一种新的中红外仪器。它的波长范围从2微米到38微米，有三个探测器(Si：As、Si：Sb和InSb)。在波长大于7微米的情况下，可以达到衍射极限的空间分辨率。低分辨率光谱学也可以用格栅进行。该仪器装备了一种新发明的“野外堆积器”，用于监测观测。它是由两个可移动的拾光镜和一个三角形反射镜组成的光学系统，并将望远镜的两个离散的视场结合到相机的视场中。这将使我们能够应用差示光度测量方法，大大提高中红外波段监测观测的精度和可行性。
Ground-based mid-infrared observations have two distinct advantages over space observations despite relatively lower sensitivity. One is the high spatial resolution and the other is the monitoring capability. These advantages can be emphasized particularly for the next coming ground-based infrared project University of Tokyo Atacama Observatory (TAO). Thanks to the low water vapor of the TAO site (5,640m) and the large aperture of the telescope (6.5meter), we can observe at 30 micron with a spatial resolution of 1 arcsec. It is about ten times higher than that of current space telescopes. The TAO is also useful for monitoring observations because of the ample observing time. To take these advantages we are now developing a new mid-infrared infrared instrument for the TAO 6.5-meter telescope. This covers a wide wavelength range from 2 to 38 micron with three detectors (Si:As, Si:Sb, and InSb). Diffraction limited spatial resolution can be achieved at wavelengths longer than 7 micron. Low-resolution spectroscopy can also be carried out with grisms. This instrument equips a newly invented "field stacker" for monitoring observations. It is an optical system that consists of two movable pick-up mirrors and a triangle shaped mirror, and combine two discrete fields of the telescope into camera's field of view. It will enable us to apply a differential photometry method and dramatically improve the accuracy and increase the feasibility of the monitoring observations at the mid-infrared wavelengths.
AKARI 红外全天巡天
DOI：
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发表时间：
2010
期刊：
影响因子：
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作者：
Y.Matsumoto;et al;小宮山進;新関伸也;Yasuo Doi
通讯作者：
Yasuo Doi
阿塔卡马大学（智利）
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