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Proceedings Paper

Low photon-count tip-tilt sensor
Author(s): Rudolf Saathof; Georg Schitter
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Paper Abstract

Due to the low photon-count of dark areas of the universe, signal strength of tip-tilt sensor is low, limiting sky-coverage of reliable tip-tilt measurements. This paper presents the low photon-count tip-tilt (LPC-TT) sensor, which potentially achieves improved signal strength. Its optical design spatially samples and integrates the scene. This increases the probability that several individual sources coincide on a detector segment. Laboratory experiments show feasibility of spatial sampling and integration and the ability to measure tilt angles. By simulation an improvement of the SNR of 10 dB compared to conventional tip-tilt sensors is shown.

Paper Details

Date Published: 27 July 2016
PDF: 8 pages
Proc. SPIE 9909, Adaptive Optics Systems V, 99096U (27 July 2016); doi: 10.1117/12.2230220
Show Author Affiliations
Rudolf Saathof, Vienna Univ. of Technology (Austria)
Georg Schitter, Vienna Univ. of Technology (Austria)

Published in SPIE Proceedings Vol. 9909:
Adaptive Optics Systems V
Enrico Marchetti; Laird M. Close; Jean-Pierre Véran, Editor(s)

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