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Proceedings Paper

A composite tracking sensor with high accuracy and large dynamic range
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Paper Abstract

A composite tracking sensor, in which a reflect mirror with a central hole is inserted in the imaging systems so that the reflective beam beyond the hole is directed to the large dynamic range detector and the beam passing the hole is reimaged by a lens to enter the high sensitivity detector, can be used for tip-tilt detecting with high accuracy and large dynamic range simultaneously. A composite tracking sensor prototype based on the multi-anode photo-multiplier tubes (MAPMT) is developed for 1.8 meter astronomical telescope in the Gaomeigu astronomical observation station. In this paper, the principle of the composite tracking sensor is introduced. The prototype is described in detailed and the experimental results are presented. The results show that this composite tracking sensor can reach the tracking accuracy of 0.2 μrad and higher within the dynamic range of 870 μrad.

Paper Details

Date Published: 21 July 2014
PDF: 7 pages
Proc. SPIE 9148, Adaptive Optics Systems IV, 914855 (21 July 2014); doi: 10.1117/12.2054592
Show Author Affiliations
Xiaoyu Ma, Institute of Optics and Electronics (China)
The Key Lab. of Adaptive Optics (China)
Kai Wei, Institute of Optics and Electronics (China)
The Key Lab. of Adaptive Optics (China)
Wenjia Zheng, Institute of Optics and Electronics (China)
The Key Lab. of Adaptive Optics (China)
Changhui Rao, Institute of Optics and Electronics (China)
The Key Lab. of Adaptive Optics (China)


Published in SPIE Proceedings Vol. 9148:
Adaptive Optics Systems IV
Enrico Marchetti; Laird M. Close; Jean-Pierre Véran, Editor(s)

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