Development of Cassegrain type 0.9-m collimator

Ho Soon Yang, Myung Seok Kang, Sung Hee Kim, Yun Woo Lee, Jae Hyub Lee, Jae Bong Song, Hoi Youn Lee, Sug Whan Kim, Jong Ung Lee, In Won Lee

Research output: Contribution to journalConference article

5 Citations (Scopus)

Abstract

Collimator is essential to evaluate and assemble the other telescopes. Its diameter should be larger than that of the target telescope for the correct use. We are currently developing the Cassegrain type collimator of which diameter is 0.9 m. The primary mirror is light-weighted so that its weight is only 70 kg. Due to its structure, the primary mirror can be supported only at the backside of the mirror. This mirror is tested with the combination of null Hartmann test and interferometer. The secondary mirror is tested with a Hindle method. This method requires 600 mm high quality spherical mirror. The distance between the primary and secondary mirror is maintained by the Carbon composite material. The assembly of two mirrors is carried out by the computer aided alignment method. The whole structure is designed to maintain the performance of the collimator under +/-5 degrees of temperature variation.

Original languageEnglish
Article number586913
Pages (from-to)1-9
Number of pages9
JournalProceedings of SPIE - The International Society for Optical Engineering
Volume5869
DOIs
Publication statusPublished - 2005 Dec 23
EventOptical Manufacturing and Testing VI - San DIego, CA, United States
Duration: 2005 Jul 312005 Aug 1

Fingerprint

collimators
Mirror
Mirrors
mirrors
Telescopes
Telescope
telescopes
Interferometers
Composite Materials
Interferometer
Carbon
Null
Alignment
interferometers
assembly
alignment
Composite materials
Target
composite materials
Evaluate

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

Cite this

Yang, H. S., Kang, M. S., Kim, S. H., Lee, Y. W., Lee, J. H., Song, J. B., ... Lee, I. W. (2005). Development of Cassegrain type 0.9-m collimator. Proceedings of SPIE - The International Society for Optical Engineering, 5869, 1-9. [586913]. https://doi.org/10.1117/12.616174
Yang, Ho Soon ; Kang, Myung Seok ; Kim, Sung Hee ; Lee, Yun Woo ; Lee, Jae Hyub ; Song, Jae Bong ; Lee, Hoi Youn ; Kim, Sug Whan ; Lee, Jong Ung ; Lee, In Won. / Development of Cassegrain type 0.9-m collimator. In: Proceedings of SPIE - The International Society for Optical Engineering. 2005 ; Vol. 5869. pp. 1-9.
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Yang, HS, Kang, MS, Kim, SH, Lee, YW, Lee, JH, Song, JB, Lee, HY, Kim, SW, Lee, JU & Lee, IW 2005, 'Development of Cassegrain type 0.9-m collimator', Proceedings of SPIE - The International Society for Optical Engineering, vol. 5869, 586913, pp. 1-9. https://doi.org/10.1117/12.616174

Development of Cassegrain type 0.9-m collimator. / Yang, Ho Soon; Kang, Myung Seok; Kim, Sung Hee; Lee, Yun Woo; Lee, Jae Hyub; Song, Jae Bong; Lee, Hoi Youn; Kim, Sug Whan; Lee, Jong Ung; Lee, In Won.

In: Proceedings of SPIE - The International Society for Optical Engineering, Vol. 5869, 586913, 23.12.2005, p. 1-9.

Research output: Contribution to journalConference article

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AU - Song, Jae Bong

AU - Lee, Hoi Youn

AU - Kim, Sug Whan

AU - Lee, Jong Ung

AU - Lee, In Won

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