Share Email Print

Proceedings Paper

Development of a correlation tracker system for the New Solar Telescope
Author(s): Seonghwan Choi; Jakyoung Nah; Yong-Jae Moon; Haimin Wang; Roy Coulter
Format Member Price Non-Member Price
PDF $14.40 $18.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

In this paper, we report on the development of a correlation tracker system for the New Solar Telescope (NST). It consists of three sub-systems: a tip-tilt mirror unit, a camera unit, and a control unit. Its software has been developed via Microsoft Visual C++, which enables us to take images from the high-speed CMOS camera in order to measure the image motions induced by atmospheric turbulence by using SAD algorithm and 2-D FFT cross-correlation, and to control the high-dynamics Piezo tip-tilt mirror for tip-tilt correction. We adopted the SIMD technology and parallel programming technology based on the Intel Core 2 Quad processor without any additional processing system (FPGA or DSP) for high-speed performance. As a result, we can make a tip-tilt correction with about seven hundreds of Hz in a closed loop mode. The prototype system has been successfully developed in a laboratory and will be installed on the NST.

Paper Details

Date Published: 15 July 2008
PDF: 8 pages
Proc. SPIE 7015, Adaptive Optics Systems, 701553 (15 July 2008); doi: 10.1117/12.788661
Show Author Affiliations
Seonghwan Choi, Korea Astronomy and Space Science Institute (South Korea)
Kyung-Hee Univ. (South Korea)
Jakyoung Nah, Korea Astronomy and Space Science Institute (South Korea)
Yong-Jae Moon, Kyung-Hee Univ. (South Korea)
Haimin Wang, New Jersey Institute of Technology (United States)
Roy Coulter, Big Bear Solar Observatory (United States)

Published in SPIE Proceedings Vol. 7015:
Adaptive Optics Systems
Norbert Hubin; Claire E. Max; Peter L. Wizinowich, Editor(s)

© SPIE. Terms of Use
Back to Top