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Journal of the Optical Society of Korea

Journal of the Optical Society of Korea


  • Vol. 17, Iss. 6 — Dec. 1, 2013
  • pp: 533–537

Optical Design of a Reflecting Telescope for CubeSat

Ho Jin, Juhee Lim, Youngju Kim, and Sanghyuk Kim  »View Author Affiliations

Journal of the Optical Society of Korea, Vol. 17, Issue 6, pp. 533-537 (2013)

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Space telescope optics is one of the major parts of any space mission used to observe astronomical targets or the Earth. This kind of space mission typically involves bulky and complex opto-mechanics with a long optical tube, but attempts have been made to observe a target with a small satellite. In this paper, we describe the optical design of a reflecting telescope for use in a CubeSat mission. For this design we adopt the off-axis segmented method for astronomical observation techniques based on a Ritchey-Chr<TEX>$\acute{e}$</TEX>tien type telescope. The primary mirror shape is a rectangle with dimensions of <TEX>$8cm{\times}8cm$</TEX>, and the secondary mirror has dimensions of <TEX>$2.4cm{\times}4.1cm$</TEX>. The focal ratio is 3 which can yield a 0.383 degree diagonal angle in a <TEX>$1280{\times}800$</TEX> CMOS color image sensor with a pixel size of <TEX>$3{\mu}m{\times}3{\mu}m$</TEX>. This optical design can capture a <TEX>${\sim}4km{\times}{\sim}2.3km$</TEX> area of the earth's surface at 700 km altitude operation.

© 2013 Optical Society of Korea

OCIS Codes
(110.6770) Imaging systems : Telescopes
(220.4830) Optical design and fabrication : Systems design
(350.6090) Other areas of optics : Space optics

Original Manuscript: August 21, 2013
Revised Manuscript: October 23, 2013
Manuscript Accepted: October 24, 2013
Published: December 25, 2013

Ho Jin, Juhee Lim, Youngju Kim, and Sanghyuk Kim, "Optical Design of a Reflecting Telescope for CubeSat," J. Opt. Soc. Korea 17, 533-537 (2013)

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