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) (KAR id:48551)

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.
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:	Divisions > Division of Natural Sciences > Physics and Astronomy
Depositing User:	Giles Tarver
Date Deposited:	21 May 2015 10:20 UTC
Last Modified:	16 Nov 2021 10:19 UTC
Resource URI:	https://kar.kent.ac.uk/id/eprint/48551 (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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