Development of a correlation tracker system for the new solar telescope

Document Type

Conference Proceeding

Publication Date

12-1-2008

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.

Identifier

66949134973 (Scopus)

ISBN

[9780819472250]

Publication Title

Proceedings of SPIE the International Society for Optical Engineering

External Full Text Location

https://doi.org/10.1117/12.788661

ISSN

0277786X

Volume

7015

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