A new five-wavelength photometer operated in Tromsø (69.6°N, 19.2°E)
A new five-wavelength photometer operated in Tromsø (69.6°N, 19.2°E)
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在特罗姆瑟（北纬 69.6°，东经 19.2°）运行的新型五波长光度计
DOI：
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发表时间：
2018
期刊：
影响因子：
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通讯作者：
C. Hall
中科院分区：
文献类型：
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作者：
S. Nozawa;T. Kawabata;K. Hosokawa;Y. Ogawa;T. Tsuda;A. Mizuno;R. Fujii;C. Hall
2017年1月，开发并安装了一台新的五波长光度计，安装在EISCAT Tromswestern站点（69.6°N，19.2°E）。光度计由两个单元组成：光学单元和控制单元以及PC。该光度计能够同时观测五个波长的极光发射。本系统的独特之处在于其精确指向的能力，这使得能够使用用同轴数字相机获得的星星图像将光度计指向场对准位置。该系统的另一个独特之处是它能够以400 Hz的采样率采集数据。给出了427.8 nm与557.7 nm、630 nm、777.4 nm和844.6 nm之间的相关性。这些比较并不重要，除非所有五个波长的发射都是从完全相同的体积发出的（即，磁天顶）在电离层中，本系统具有。
A new five-wavelength photometer was developed and installed at the EISCAT Tromsø site (69.6°N, 19.2°E) in January 2017. The photometer consists of two units: an optical unit and a control unit together with a PC. The photometer is capable of simultaneously observing auroral emissions with five wavelengths. A uniqueness of the present system is its capability of precise pointing, which enables pointing the photometer at the field-aligned position using a star image obtained with a coaxial digital camera. Another uniqueness of the system is its capability of taking data at a sampling rate of 400 Hz. Some preliminary results including correlations between 427.8 nm and 557.7 nm, 630 nm, 777.4 nm, and 844.6 nm are presented. These comparisons are not significant unless all of the five wavelength emissions emanated from exactly the same volume (i.e., magnetic zenith) in the ionosphere, which the present system has.