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Development of optomechanical structure for the NISS onboard NEXTSat-1
Author(s): Bongkon Moon; Sung-Joon Park; Woong-Seob Jeong; Duk-Hang Lee; Kyeongyeon Ko; Dae-Hee Lee; Youngsik Park; Jeonghyun Pyo; Won-Kee Park; Il-Joong Kim; Mingyu Kim; Minjin Kim; Jongwan Ko; Young Sam Yu; Toshio Matsumoto; Jang-Soo Chae; Goo-Hwan Shin; Norihide Takeyama; Akito Enokuchi
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Paper Abstract

The Korea Astronomy and Space Science Institute has developed NISS (Near-infrared Imaging Spectrometer for Star formation history) as a scientific payload for the first next generation of small satellite, NEXTSat-1 in Korea. NISS is a NIR imaging spectrometer exploiting a Linear Variable Filter (LVF) in the spectral passband from 0.95 um to 2.5 um and with low spectral resolution of 20. Optical system consists of 150mm aperture off-axis mirror system and 8-element relay-lenses providing a field of view of 4 square degrees. Primary and secondary aluminum mirrors made of RSA6061 are precisely fabricated and all of the lenses are polished with infrared optics materials. In principle, the optomechanical design has to withstand the vibration conditions of the launcher and maintain optical performance in the space environment. The main structure and optical system of the NISS are cooled down to about 200K by passive cooling for our astronomical mission. We also cool the detector and the LVF down to about 90K by using a small stirling cooler at 200K stage. The cooling test for whole assembled body has shown that the NISS can be cooled down to 200K by passive cooling during about 80 hours. We confirmed that the optomechanical structure is safe and rigid enough to maintain the system performance during the cooling, vibration and thermal vacuum test. After the integration of the NISS into the NEXTSat-1, space environmental tests for the satellite were passed. In this paper, we report the design, fabrication, assembly and test of the optomechanical structure for the NISS flight model.

Paper Details

Date Published: 6 July 2018
PDF: 9 pages
Proc. SPIE 10698, Space Telescopes and Instrumentation 2018: Optical, Infrared, and Millimeter Wave, 106984R (6 July 2018); doi: 10.1117/12.2311906
Show Author Affiliations
Bongkon Moon, Korea Astronomy and Space Science Institute (Korea, Republic of)
Sung-Joon Park, Korea Astronomy and Space Science Institute (Korea, Republic of)
Woong-Seob Jeong, Korea Astronomy and Space Science Institute (Korea, Republic of)
Univ. of Science and Technology (Korea, Republic of)
Duk-Hang Lee, Korea Astronomy and Space Science Institute (Korea, Republic of)
Kyeongyeon Ko, Korea Astronomy and Space Science Institute (Korea, Republic of)
Univ. of Science and Technology (Korea, Republic of)
Dae-Hee Lee, Korea Astronomy and Space Science Institute (Korea, Republic of)
Youngsik Park, Korea Astronomy and Space Science Institute (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)
Mingyu Kim, Genesia Corp. (Japan)
Minjin Kim, Korea Astronomy and Space Science Institute (Korea, Republic of)
Jongwan Ko, Korea Astronomy and Space Science Institute (Korea, Republic of)
Young Sam Yu, Korea Astronomy and Space Science Institute (Korea, Republic of)
Toshio Matsumoto, Korea Astronomy and Space Science Institute (Korea, Republic of)
Jang-Soo Chae, Satellite Technology Research Ctr., KAIST (Korea, Republic of)
Goo-Hwan Shin, Satellite Technology Research Ctr., KAIST (Korea, Republic of)
Norihide Takeyama, Genesia Corp. (Japan)
Akito Enokuchi, Genesia Corp. (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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