Correlation wavefront sensing for extended objects

Matthew J. Townson; Gordon D. Love; Aglaè Kellerer; Christopher D. Saunter

doi:10.1117/12.2234415

27 July 2016 Correlation wavefront sensing for extended objects

Matthew J. Townson, Gordon D. Love, Aglaè Kellerer, Christopher D. Saunter

Proceedings Volume 9909, Adaptive Optics Systems V; 99096Q (2016) https://doi.org/10.1117/12.2234415
Event: SPIE Astronomical Telescopes + Instrumentation, 2016, Edinburgh, United Kingdom

Abstract

Correlation wavefront sensing for extended objects requires both reference images for cross-correlation and centroiding parameters for measuring the shift in the correlation image. We present a method for optimising centroiding parameters demonstrated on a center of mass measurement of the correlation images. The process can be entirely automated and offloaded out of the adaptive optics system into a separate pipeline and so not interfere with the adaptive optics system. This means the method is implemented entirely in software, so can be added to any existing adaptive optics system which employs correlation wavefront sensors.

Citation Download Citation

Matthew J. Townson, Gordon D. Love, Aglaè Kellerer, and Christopher D. Saunter "Correlation wavefront sensing for extended objects", Proc. SPIE 9909, Adaptive Optics Systems V, 99096Q (27 July 2016); https://doi.org/10.1117/12.2234415

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available