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Proceedings Paper

Wide-field telescope design for the KMTNet project
Author(s): Seung-Lee Kim; Byeong-Gon Park; Chung-Uk Lee; Larry Kappler; Nathan Kappler; Wade Poteet; Harold Cauthen; Dan Blanco; Richard Buchroeder; Jose Teran; Scott Freestone; Jong-Ung Lee; Myung Cho; In-Soo Yuk; Moo-Young Chun; Ho Jin; Sang-Mok Cha
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Paper Abstract

The Korea Astronomy and Space Science Institute (KASI) are under development three 1.6m optical telescopes for the Korea Micro-lensing Telescope Network (KMTNet) project. These will be installed at three southern observatories in Chile, South Africa, and Australia by middle 2014 to monitor dense star fields like the Galactic bulge and Large Magellanic Cloud. The primary scientific goal of the project is to discover numerous extra-solar planets using the gravitational micro-lensing technique. We have completed the final design of the telescope. The most critical design issue was wide-field optics. The project science requires the Delivered Image Quality (DIQ) of less than 1.0 arcsec FWHM within 1.2 degree radius FOV, under atmospheric seeing of 0.75 arcsec. We chose the prime-focus configuration and realized the DIQ requirement by using a purely parabolic primary mirror and four corrector lenses with all spherical surfaces. We present design results of the wide-field optics, the primary mirror coating and support, and the focus system with three linear actuators on the head ring.

Paper Details

Date Published: 15 September 2011
PDF: 6 pages
Proc. SPIE 8151, Techniques and Instrumentation for Detection of Exoplanets V, 81511B (15 September 2011); doi: 10.1117/12.894212
Show Author Affiliations
Seung-Lee Kim, Korea Astronomy and Space Science Institute (Korea, Republic of)
Byeong-Gon Park, Korea Astronomy and Space Science Institute (Korea, Republic of)
Chung-Uk Lee, Korea Astronomy and Space Science Institute (Korea, Republic of)
Larry Kappler, TBR Construction & Engineering (United States)
Nathan Kappler, TBR Construction & Engineering (United States)
Wade Poteet, CP Systems, Inc. (United States)
Harold Cauthen, CP Systems, Inc. (United States)
Dan Blanco, CP Systems, Inc. (United States)
Richard Buchroeder, CP Systems, Inc. (United States)
Jose Teran, M3 Engineering & Technology Corp. (United States)
Scott Freestone, M3 Engineering & Technology Corp. (United States)
Jong-Ung Lee, Cheongju Univ. (Korea, Republic of)
Myung Cho, National Optical Astronomy Observatory (United States)
In-Soo Yuk, Korea Astronomy and Space Science Institute (Korea, Republic of)
Moo-Young Chun, Korea Astronomy and Space Science Institute (Korea, Republic of)
Ho Jin, Kyung Hee Univ. (Korea, Republic of)
Sang-Mok Cha, Korea Astronomy and Space Science Institute (Korea, Republic of)


Published in SPIE Proceedings Vol. 8151:
Techniques and Instrumentation for Detection of Exoplanets V
Stuart Shaklan, Editor(s)

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