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Proceedings Paper

Wide field corrector for the KMTNet telescope
Author(s): Yongseok Lee; Sang-Mok Cha; Wade Poteet; Philip Lam; Chung-Uk Lee; Seung-Lee Kim; Byeong-Gon Park; Richard A. Buchroeder; Ho Jin
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Paper Abstract

We present the design, assembly, alignment, and verification process of the wide field corrector for the Korea Microlensing Telescope Network (KMTNet) 1.6 meter optical telescope. The optical configuration of the KMTNet telescope is prime focus, having a wide field corrector and the CCD camera on the topside of Optical Tube Assembly (OTA). The corrector is made of four lenses designed to have all spherical surfaces, being the largest one of 552 mm physical diameter. Combining with a purely parabolic primary mirror, this optical design makes easier to fabricate, to align, and to test the wide field optics. The centering process of the optics in the lens cell was performed on a precision rotary table using an indicator. After the centering, we mounted three large and heavy lenses on each cell by injecting the continuous Room Temperature Vulcanizing (RTV) silicon rubber bonding via a syringe.

Paper Details

Date Published: 22 July 2014
PDF: 9 pages
Proc. SPIE 9145, Ground-based and Airborne Telescopes V, 914538 (22 July 2014); doi: 10.1117/12.2055055
Show Author Affiliations
Yongseok Lee, Korea Astronomy and Space Science Institute (Korea, Republic of)
Kyung Hee Univ. (Korea, Republic of)
Sang-Mok Cha, Korea Astronomy and Space Science Institute (Korea, Republic of)
Kyung Hee Univ. (Korea, Republic of)
Wade Poteet, CP Systems, Inc. (United States)
Philip Lam, Lam Optics, Inc. (United States)
Chung-Uk Lee, Korea Astronomy and Space Science Institute (Korea, Republic of)
Seung-Lee Kim, Korea Astronomy and Space Science Institute (Korea, Republic of)
Byeong-Gon Park, Korea Astronomy and Space Science Institute (Korea, Republic of)
Richard A. Buchroeder, CP Systems, Inc. (United States)
Ho Jin, Kyung Hee Univ. (Korea, Republic of)


Published in SPIE Proceedings Vol. 9145:
Ground-based and Airborne Telescopes V
Larry M. Stepp; Roberto Gilmozzi; Helen J. Hall, Editor(s)

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