Translator Disclaimer
Paper
19 August 2014 Research of fiber position measurement by multi CCD cameras
Author Affiliations +
Abstract
Parallel controlled fiber positioner as an efficiency observation system, has been used in LAMOST for four years, and will be proposed in ngCFHT and rebuilt telescope Mayall. The fiber positioner research group in USTC have designed a new generation prototype by a close-packed module robotic positioner mechanisms. The prototype includes about 150 groups fiber positioning module plugged in 1 meter diameter honeycombed focal plane. Each module has 37 12mm diameter fiber positioners. Furthermore the new system promotes the accuracy from 40 um in LAMOST to 10um in MSDESI. That’s a new challenge for measurement. Close-loop control system are to be used in new system. The CCD camera captures the photo of fiber tip position covered the focal plane, calculates the precise position information and feeds back to control system. After the positioner rotated several loops, the accuracy of all positioners will be confined to less than 10um. We report our component development and performance measurement program of new measuring system by using multi CCD cameras. With the stereo vision and image processing method, we precisely measure the 3-demension position of fiber tip carried by fiber positioner. Finally we present baseline parameters for the fiber positioner measurement as a reference of next generation survey telescope design.
© (2014) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Zengxiang Zhou, Hongzhuan Hu, Jianping Wang, Chao Zhai, Jiaru Chu, and Zhigang Liu "Research of fiber position measurement by multi CCD cameras", Proc. SPIE 9151, Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation, 91514X (19 August 2014); https://doi.org/10.1117/12.2055657
PROCEEDINGS
12 PAGES


SHARE
Advertisement
Advertisement
RELATED CONTENT

Developing the GOTO telescope control system
Proceedings of SPIE (December 13 2020)
Progress on the UKIRT upgrades program
Proceedings of SPIE (September 18 1997)
Vision systems on the internet
Proceedings of SPIE (November 07 2005)
A novel calibration method of CCD camera for LAMOST
Proceedings of SPIE (September 13 2012)
Assembly of the Dark Energy Survey CCD Imager
Proceedings of SPIE (July 26 2010)

Back to Top