Characterisations of the HinOTORI telescope with a three-color imager at Ali Observatory in Western Tibet
Characterisations of the HinOTORI telescope with a three-color imager at Ali Observatory in Western Tibet
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DOI：
10.1088/1748-0221/17/01/p01022
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发表时间：
2022
影响因子：
1.3
通讯作者：
W. Liu;Y. Utsumi;Y. Yao;K. Kawabata;M. Sasada;M. Yoshida;J. Yin;Z. Lou
中科院分区：
文献类型：
--
作者：
W. Liu;Y. Utsumi;Y. Yao;K. Kawabata;M. Sasada;M. Yoshida;J. Yin;Z. Lou
HinOTORI是中国与日本合作的一项国际合作项目支持的新型望远镜。它是一个50厘米的望远镜，配备了同时使用的三色成像仪(U‘、R C和I C波段)。它位于海拔5100米的阿里天文台。由于高海拔和极端干旱，阿里站点是最适合进行光学天体测量的站点之一。HinOTORI望远镜的目标是探测光学瞬变，如引力波(GW)源、超新星、伽马射线暴(GRB)等。本文介绍了该系统的现场信息、同时三色光学系统的设计、系统仪表和整体控制系统。我们还报道了哈特曼常数(0.49“/0.56”/0.6“)、最佳焦距(3.922/3.920/3.903 mm)、点对半高宽尺寸(3.755/3.328/3.167像素)、总透过率和极限星等(15.69/17.57/17.05 MAG，10σ30秒曝光时间)等三个波段的望远镜特性。利用不同的气团观测资料，得到了三个波段(0.366/0.061/0.026)的大气消光系数。
HinOTORI is a new telescope supported by an international collaboration project between China and Japan. It is a 50 centimeter telescope equipped with simultaneous three-color imagers (u', R C, and I C bands). It is located at Ali Observatory at an altitude of 5100m. Thanks to the high altitude and extreme dryness, Ali site is one of the most suitable sites for optical astrometry. HinOTORI telescope aims at detecting optical transients such as the counterparts of gravitational wave (GW) sources, supernovae, gamma-ray bursts (GRB) and so on. This paper describes the site information, design of simultaneous three-color optical layout, system instruments and whole control system. We also report some telescope characterisations for three bands (u'/R C/I C) respectively, such as Hartmann constant (0.49”/0.56”/0.60”), best focus position (3.922/3.920/3.903 mm), PSF FWHM size (3.755/3.328/3.167pixels), total transmittance and limiting magnitude (15.69/17.57/17.05mag, 10 σ 30 seconds exposure time). With different airmass observation data, the atmospheric extinction coefficients of three bands (0.366/0.061/0.026) were also derived.