论文标题
30毫米望远镜
The Thirty Millimeter Telescope
论文作者
论文摘要
已经开发了一个近红外望远镜，其有效的孔径直径为30毫米。该开发项目的主要目的是观察$ j $，$ h $和$ k _ {\ rm s} $频段中的北方明亮恒星，并为这些恒星提供准确的光度数据。第二个目标是反复观察沿北银河平面（$ | b | \ le 5^\ circ $和$δ\ ge -30^\ circ $）的皮带状区域，以监视那里的明亮可变星。自2016年12月以来，望远镜一直在使用。本文的目的是描述望远镜的设计和操作性能，光度法校准方法以及我们的科学目标。我们表明，望远镜的不确定性分别在$ j $，$ h $和$ k _ {\ rm s} $ band中的7、6.5和6〜MAG的不确定性提供小于5％的不确定性。同一恒星的光度测量值的重复性大于明亮恒星的1 \％。我们的观察结果将为两微米天空调查和两个Micron All-Sky调查所缺乏的明亮恒星提供准确的光度法。良好节奏的重复观察也将揭示其近红外变异性的性质。
A near-infrared telescope with an effective aperture diameter of thirty millimeters has been developed. The primary objective of the development is to observe northern bright stars in the $J$, $H$, and $K_{\rm s}$ bands and provide accurate photometric data on those stars. The second objective is to repeatedly observe a belt-like region along the northern Galactic plane ($|b| \le 5^\circ$ and $δ\ge -30^\circ$) to monitor bright variable stars there. The telescope has been in use since December 2016. The purpose of this paper is to describe the design and operational performances of the telescope, photometric calibration methods, and our scientific goals. We show that the telescope has the ability to provide photometry with an uncertainty of less than 5\% for stars brighter than 7, 6.5, and 6~mag in the $J$, $H$, and $K_{\rm s}$ bands, respectively. The repeatability of the photometric measurements for the same star is better than 1\% for bright stars. Our observations will provide accurate photometry on bright stars that are lacking in the Two Micron Sky Survey and the Two Micron All-Sky Survey. Repeated observations at a good cadence will also reveal their nature of the variability in the near-infrared.
