Improved technique for centroiding in Shack-Hartmann sensing at low light level

Ruggiu, J.M. and Solomon, Christopher J. (1997) Improved technique for centroiding in Shack-Hartmann sensing at low light level. In: Tyson, Robert K. and Fugate, Robert Q., eds. Adaptive Optics and Applications. SPIE Proceedings . Spie - Int Soc Optical Engineering, pp. 545-550. ISBN 0-8194-2548-6. (doi:10.1117/12.290170) (The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided) (KAR id:17920)

The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided.
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Abstract

A study has been made of a Shack-Hartman sensor utilising a Charge Coupled Device (CCD) array and of an alternative approach to estimating the centroid. This is based on modelling the Point Spread Function (PSF) by a Gram-Charlier type expansion type, we will present results for different levels of Kolmogorov turbulence with and without CCD read noise. Our high-fidelity computer simulation demonstrates that more accurate estimation of the PSF centroid may be achieved at low light level as compared to the standard center of gravity estimation.

Item Type:	Book section
DOI/Identification number:	10.1117/12.290170
Additional information:	Conference on Adaptive Optics and Applications SAN DIEGO, CA, JUL 30-AUG 01, 1997
Subjects:	Q Science > QC Physics
Divisions:	Divisions > Division of Natural Sciences > Physics and Astronomy
Depositing User:	T.J. Sango
Date Deposited:	18 May 2009 08:17 UTC
Last Modified:	05 Nov 2024 09:53 UTC
Resource URI:	https://kar.kent.ac.uk/id/eprint/17920 (The current URI for this page, for reference purposes)

University of Kent Author Information

Solomon, Christopher J..

Creator's ORCID:	https://orcid.org/0000-0002-5057-4614
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