29 July 2016 Near-infrared imaging spectrometer onboard NEXTSat-1
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The NISS (Near-infrared Imaging Spectrometer for Star formation history) is the near-infrared instrument optimized to the first next generation of small satellite (NEXTSat-1) in Korea. The spectro-photometric capability in the near-infrared range is a unique function of the NISS. The major scientific mission is to study the cosmic star formation history in local and distant universe. For those purposes, the NISS will perform the large areal imaging spectroscopic survey for astronomical objects and low background regions. We have paid careful attention to reduce the volume and to increase the total throughput. The newly implemented off-axis optics has a wide field of view (2° x 2°) and a wide wavelength range from 0.9 to 3.8μm. The mechanical structure is designed to consider launching conditions and passive cooling of the telescope. The compact dewar after relay-lens module is to operate the infrared detector and spectral filters at 80K stage. The independent integration of relay-lens part and primary-secondary mirror assembly alleviates the complex alignment process. We confirmed that the telescope and the infrared sensor can be cooled down to around 200K and 80K, respectively. The engineering qualification model of the NISS was tested in the space environment including the launch-induced vibration and shock. The NISS will be expected to demonstrate core technologies related to the development of the future infrared space telescope in Korea.
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Woong-Seob Jeong, Woong-Seob Jeong, Sung-Joon Park, Sung-Joon Park, Bongkon Moon, Bongkon Moon, Dae-Hee Lee, Dae-Hee Lee, Jeonghyun Pyo, Jeonghyun Pyo, Won-Kee Park, Won-Kee Park, Youngsik Park, Youngsik Park, Il-Joong Kim, Il-Joong Kim, Kyeongyeon Ko, Kyeongyeon Ko, Dukhang Lee, Dukhang Lee, Min Gyu Kim, Min Gyu Kim, Minjin Kim, Minjin Kim, Jongwan Ko, Jongwan Ko, Goo-Hwan Shin, Goo-Hwan Shin, Jangsoo Chae, Jangsoo Chae, Toshio Matsumoto, Toshio Matsumoto, } "Near-infrared imaging spectrometer onboard NEXTSat-1", Proc. SPIE 9904, Space Telescopes and Instrumentation 2016: Optical, Infrared, and Millimeter Wave, 990459 (29 July 2016); doi: 10.1117/12.2232924; https://doi.org/10.1117/12.2232924


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