Conceptual opto-mechanical design of a NIR imaging spectrometer for the Korean NEXTSat-1 mission

Bongkon Moon; Kwijong Park; Sung-Joon Park; Woong-Seob Jeong; Dae-Hee Lee; Youngsik Park; Uk-Won Nam; Wonyong Han; Jeonghyun Pyo; Wonki Park; Il-Joong Kim; Duk-Hang Lee; Jang-Soo Chae; Goo-Hwan Shin; Norihide Takeyama; Akito Enokuchi

doi:10.1117/12.2024796

26 September 2013 Conceptual opto-mechanical design of a NIR imaging spectrometer for the Korean NEXTSat-1 mission

Bongkon Moon, Kwijong Park, Sung-Joon Park, Woong-Seob Jeong, Dae-Hee Lee, Youngsik Park, Uk-Won Nam, Wonyong Han, Jeonghyun Pyo, Wonki Park, Il-Joong Kim, Duk-Hang Lee, Jang-Soo Chae, Goo-Hwan Shin, Norihide Takeyama, Akito Enokuchi

Author Affiliations +

Proceedings Volume 8860, UV/Optical/IR Space Telescopes and Instruments: Innovative Technologies and Concepts VI; 886010 (2013) https://doi.org/10.1117/12.2024796
Event: SPIE Optical Engineering + Applications, 2013, San Diego, California, United States

Abstract

Since the end of 2012, Korea Astronomy and Space Science Institute (KASI) has been developed the Near-infrared Imaging Spectrometer for Star formation history (NISS), which is a payload of the Korean next small satellite 1 (NEXTSat-1) and will be launched in 2017. NISS has a cryogenic system, which will be cooled down to around 200K by a radiation cooling in space. NISS is an off-axis catadioptric telescope with 150mm aperture diameter and F-number 3.5, which covers the observation wavelengths from 0.95-3.8μm by using the linear variable filter (LVF) for the near infrared spectroscopy. The entire field of view is 2deg x 2deg with 7arcsec pixel scale. Optics consists of two parabolic primary and secondary mirrors and re-imaging lenses having 8 elements. The main requirement for the optical performance is that the RMS spot diameters for whole fields are smaller than the detector pixel, 18μm. Two LVFs will be used for 0.9- 1.9μm and 1.9-3.8μm, whose FWHM is more than 2%. We will use the gold-coated aluminum mirrors and employ the HgCdTe 1024x1024 detector made by Teledyne. This paper presents the conceptual opto-mechanical design of NISS.

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Bongkon Moon, Kwijong Park, Sung-Joon Park, Woong-Seob Jeong, Dae-Hee Lee, Youngsik Park, Uk-Won Nam, Wonyong Han, Jeonghyun Pyo, Wonki Park, Il-Joong Kim, Duk-Hang Lee, Jang-Soo Chae, Goo-Hwan Shin, Norihide Takeyama, and Akito Enokuchi "Conceptual opto-mechanical design of a NIR imaging spectrometer for the Korean NEXTSat-1 mission", Proc. SPIE 8860, UV/Optical/IR Space Telescopes and Instruments: Innovative Technologies and Concepts VI, 886010 (26 September 2013); https://doi.org/10.1117/12.2024796

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