Acta Optica Sinica, Volume. 34, Issue 11, 1122002(2014)
Infrared Background Radiation Removing Design and Simulation of Antarctic Survey Telescope
Antarctic Dome A is considered to be the most outstanding astronomical photometry and observation site on earth, particularly in the infrared. To take full advantage of the unique advantages for astronomical observation, meet the needs of exoplanet observations and provide experience for the future development of larger antarctic telescopes, the construction of 1 m visible/infrared survey telescope is proposed. By occultation method to detect exoplanets, it should achieve five ten thousandths of photometric accuracy by reducing background radiation,suppressing the self-radiation of telescope is very important. Take 1 m visible/infrared sky survey telescope as an example, the method of suppression of self-radiation is discussed. One meter antarctic visible/infrared survey telescope adopt a direct, simple optical system, but can not be set the cold pupil, suppressing stray light is less efficient. By optimizing the design of the optical system, setting the secondary mirror as aperture, the unique design of the Dewar, secondary baffle and main baffles, the background radiation on imaging surface is 6.8×10-10 W/m2. Through simulation, which is one-fifth of the sky background radiation, the background radiation suppression meets the requirements of astronomical observations.
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Lu Haiping, Yuan Xiangyan, Zhang Kaiyuan. Infrared Background Radiation Removing Design and Simulation of Antarctic Survey Telescope[J]. Acta Optica Sinica, 2014, 34(11): 1122002
Category: Optical Design and Fabrication
Received: May. 20, 2014
Accepted: --
Published Online: Sep. 18, 2014
The Author Email: Haiping Lu (hplu@niaot.ac.cn)