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Proceedings Paper

Development of near-infrared imaging spectrometer (NISS) onboard NEXTSat-1
Author(s): Woong-Seob Jeong; Sung-Joon Park; Bongkon Moon; Dae-Hee Lee; Jeonghyun Pyo; Won-Kee Park; Il-Joong Kim; Youngsik Park; Kyeongyeon Ko; Mingyu Kim; Dukhang Lee; Minjin Kim; Jongwan Ko; Sun Choel Yang; Norihide Takeyama; Goo-Hwan Shin; Jang-Soo Chae; Toshio Matsumoto
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Paper Abstract

The NISS (Near-infrared Imaging Spectrometer for Star formation history) have been developed by KASI as one of the scientific payloads onboard the first small satellite of NEXTSat program (NEXTSat-1) in Korea. The both imaging and low spectral resolution spectroscopy in the wide near-infrared range from 0.95 to 2.5µm and wide field of view of 2° x 2° is a unique capability of the NISS for studying the star formation in local and distant Universe. In the design of the NISS, special care was taken by implementing the off-axis system to increase the total throughput with limited resources from the small satellite. We confirmed that the mechanical structure of the NISS could be maintained in space through passive cooling of the telescope. To operate the infrared detector and spectral filters at 80K stage, the compact dewar module was assembled after the relay-lens module. The integrations of relay-lens part, primary-secondary mirror assembly and dewar module were independently performed, which alleviated the complex alignment process. The telescope and infrared sensor were validated for the operation at cryogenic temperatures of around 200K and 80K, respectively. The system performance of the NISS, such as focus, cooling efficiency, wavelength calibration and system noise, was evaluated by utilizing our constructed test facility. After the integration into the NEXTSat-1, the flight model of the NISS was tested under the space environments. The NISS is scheduled to be launched in late 2018 and it will demonstrate core technologies related to the future infrared space telescope in Korea.

Paper Details

Date Published: 6 July 2018
PDF: 7 pages
Proc. SPIE 10698, Space Telescopes and Instrumentation 2018: Optical, Infrared, and Millimeter Wave, 1069822 (6 July 2018); doi: 10.1117/12.2312336
Show Author Affiliations
Woong-Seob Jeong, Korea Astronomy and Space Science Institute (Korea, Republic of)
Univ. of Science & Technology (Korea, Republic of)
Sung-Joon Park, Korea Astronomy and Space Science Institute (Korea, Republic of)
Bongkon Moon, Korea Astronomy and Space Science Institute (Korea, Republic of)
Dae-Hee Lee, Korea Astronomy and Space Science Institute (Korea, Republic of)
Univ. of Science & Technology (Korea, Republic of)
Jeonghyun Pyo, Korea Astronomy and Space Science Institute (Korea, Republic of)
Won-Kee Park, Korea Astronomy and Space Science Institute (Korea, Republic of)
Il-Joong Kim, Korea Astronomy and Space Science Institute (Korea, Republic of)
Youngsik Park, Korea Astronomy and Space Science Institute (Korea, Republic of)
Kyeongyeon Ko, Korea Astronomy and Space Science Institute (Korea, Republic of)
Univ. of Science & Technology (Korea, Republic of)
Mingyu Kim, Seoul National Univ. (Korea, Republic of)
Genesia Corp. (Japan)
Dukhang Lee, Korea Astronomy and Space Science Institute (Korea, Republic of)
York Univ. (Canada)
Minjin Kim, Korea Astronomy and Space Science Institute (Korea, Republic of)
Univ. of Science & Technology (Korea, Republic of)
Jongwan Ko, Korea Astronomy and Space Science Institute (Korea, Republic of)
Univ. of Science & Technology (Korea, Republic of)
Sun Choel Yang, Osong Medical Innovation Foundation (Korea, Republic of)
Norihide Takeyama, Genesia Corp. (Japan)
Goo-Hwan Shin, KAIST (Korea, Republic of)
Jang-Soo Chae, KAIST (Korea, Republic of)
Toshio Matsumoto, Korea Astronomy and Space Science Institute (Korea, Republic of)
ISAS/JAXA (Japan)


Published in SPIE Proceedings Vol. 10698:
Space Telescopes and Instrumentation 2018: Optical, Infrared, and Millimeter Wave
Makenzie Lystrup; Howard A. MacEwen; Giovanni G. Fazio; Natalie Batalha; Nicholas Siegler; Edward C. Tong, Editor(s)

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