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

Ruggiu, J.M., Solomon, Christopher J. (1997) Improved technique for centroiding in Shack-Hartmann sensing at low light level. In: Proceedings of SPIE - The International Society for Optical Engineering. 3126. pp. 545-550. ISBN 0277786X. (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)

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. (Contact us about this Publication)
Official URL
http://dx.doi.org/10.1117/12.290170

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: Conference or workshop item (Paper)
DOI/Identification number: 10.1117/12.290170
Additional information: Unmapped bibliographic data: LA - English [Field not mapped to EPrints] J2 - Proc SPIE Int Soc Opt Eng [Field not mapped to EPrints] AD - Physics Department, University of Kent, Canterbury, Kent CT2 7NR, United Kingdom [Field not mapped to EPrints] DB - Scopus [Field not mapped to EPrints] A4 - SPIE [Field not mapped to EPrints] C3 - Proceedings of SPIE - The International Society for Optical Engineering [Field not mapped to EPrints]
Uncontrolled keywords: Centroiding, Estimation, Gram-Charlier expansion, Hartmann sensor, Adaptive optics, Charge coupled devices, Computer simulation, Optical transfer function, Centroiding, Wavefront sensors, Optical sensors
Subjects: Q Science
Divisions: Faculties > Sciences > School of Physical Sciences > Forensic Imaging Group
Depositing User: Giles Tarver
Date Deposited: 21 May 2015 10:20 UTC
Last Modified: 29 May 2019 14:34 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/48551 (The current URI for this page, for reference purposes)
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