4 August 2009 A Fourier transform spectrometer for site testing at Dome A
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Abstract
Observations in tera-hertz astronomy can only be done at a site with good atmospheric transmission at millimeter and submillimeter wavelengths. With extremely dry weather and calm atmosphere resulted by high altitude and cold temperature, Dome A (or Dome Argus), Antarctica, is possibly the best site on this earth for THz astronomy. To evaluate the site condition there, we are constructing a Fourier Transform Spectrometer (FTS) based on Martin-Puplett interferometer to measure the atmospheric transmission in the frequency range of 0.75~15THz. The whole FTS system is designed for unattended and outdoor (temperatures even below -70 degrees Celsius) operation. Its total power consumption is estimated to be approximately 200W. This contribution will give a brief overview of this FTS development.
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Xin-Xing Li, Xin-Xing Li, Scott Paine, Scott Paine, Qi-Jun Yao, Qi-Jun Yao, Sheng-Cai Shi, Sheng-Cai Shi, Hiroshi Matsuo, Hiroshi Matsuo, Ji Yang, Ji Yang, Qi-Zhou Zhang, Qi-Zhou Zhang, } "A Fourier transform spectrometer for site testing at Dome A", Proc. SPIE 7385, International Symposium on Photoelectronic Detection and Imaging 2009: Terahertz and High Energy Radiation Detection Technologies and Applications, 73851D (4 August 2009); doi: 10.1117/12.835103; https://doi.org/10.1117/12.835103
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