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Journal of the Optical Society of Korea

Journal of the Optical Society of Korea


  • Vol. 13, Iss. 2 — Jun. 25, 2009
  • pp: 193–200

Optomechanical Design of a Compact Imaging Spectrometer for a Microsatellite STSAT3

Jun-Ho Lee, Chi-Weon Lee, Yong-Min Kim, and Jae-Wook Kim  »View Author Affiliations

Journal of the Optical Society of Korea, Vol. 13, Issue 2, pp. 193-200 (2009)

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A compact imaging spectrometer (COMIS) is currently under development for use in the STSAT3 microsatellite. COMIS images the Earth's surface and atmosphere with ground sampling distances of <TEX>${\sim}30m$</TEX> in the <TEX>$18{\sim}62$</TEX> spectral bands (<TEX>$4.0{\sim}1.05{\mu}m$</TEX>) for the nadir looking at an altitude of 700 km. COMIS has an imaging telescope and an imaging spectrometer box into which three electronics PCBs are embedded. These are designed into a single assembly with dimensions of 35(L) <TEX>$\times$</TEX> 20(W) <TEX>$\times$</TEX> 12(H) <TEX>$cm^3$</TEX> and a mass of 4.3 kg. Optomechanical design efforts are focused on manufacturing ease, alignment, assembly, testing and improved robustness in space environments. Finite element analysis demonstrates that COMIS will survive in launch and space environments and perform the system modulation transfer function (MTF) in excess of 0.29 at the Nyquist frequency of the CCD detector (38.5 lines-per-mm).

© 2009 Optical Society of Korea

OCIS Codes
(200.4880) Optics in computing : Optomechanics
(220.4830) Optical design and fabrication : Systems design
(300.6190) Spectroscopy : Spectrometers
(350.6090) Other areas of optics : Space optics

Original Manuscript: April 1, 2009
Revised Manuscript: April 22, 2009
Manuscript Accepted: April 22, 2009
Published: June 25, 2009

Jun-Ho Lee, Chi-Weon Lee, Yong-Min Kim, and Jae-Wook Kim, "Optomechanical Design of a Compact Imaging Spectrometer for a Microsatellite STSAT3," J. Opt. Soc. Korea 13, 193-200 (2009)

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