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Gravitational Lensing Accuracy Testing 2010 (GREAT10) Challenge Handbook

Kitching, Thomas; Amara, Adam; Gill, Mandeep; Harmeling, Stefan; Heymans, Catherine; Massey, Richard; Rowe, Barnaby; Schrabback, Tim; Voigt, Lisa; Balan, Sreekumar; Bernstein, Gary; Bethge, Matthias; Bridle, Sarah; Courbin, Frederic; Gentile, Marc; Heavens, Alan; Hirsch, Michael; Hosseini, Reshad; Kiessling, Alina; Kirk, Donnacha; Kuijken, Konrad; Mandelbaum, Rachel; Moghaddam, Baback; Nurbaeva, Guldariya; Paulin-Henriksson, Stephane; Rassat, Anais; Rhodes, Jason; Schoelkopf, Bernhard; Shawe-Taylor, John; Shmakova, Marina; Taylor, Andy; Velander, Malin; van Waerbeke, Ludovic; Witherick, Dugan; Wittman, David

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Authors

Thomas Kitching

Adam Amara

Mandeep Gill

Stefan Harmeling

Catherine Heymans

Barnaby Rowe

Tim Schrabback

Lisa Voigt

Sreekumar Balan

Gary Bernstein

Matthias Bethge

Sarah Bridle

Frederic Courbin

Marc Gentile

Alan Heavens

Michael Hirsch

Reshad Hosseini

Alina Kiessling

Donnacha Kirk

Konrad Kuijken

Rachel Mandelbaum

Baback Moghaddam

Guldariya Nurbaeva

Stephane Paulin-Henriksson

Anais Rassat

Jason Rhodes

Bernhard Schoelkopf

John Shawe-Taylor

Marina Shmakova

Andy Taylor

Malin Velander

Ludovic van Waerbeke

Dugan Witherick

David Wittman



Abstract

GRavitational lEnsing Accuracy Testing 2010 (GREAT10) is a public image analysis challenge aimed at the development of algorithms to analyze astronomical images. Specifically, the challenge is to measure varying image distortions in the presence of a variable convolution kernel, pixelization and noise. This is the second in a series of challenges set to the astronomy, computer science and statistics communities, providing a structured environment in which methods can be improved and tested in preparation for planned astronomical surveys. GREAT10 extends upon previous work by introducing variable fields into the challenge. The “Galaxy Challenge” involves the precise measurement of galaxy shape distortions, quantified locally by two parameters called shear, in the presence of a known convolution kernel. Crucially, the convolution kernel and the simulated gravitational lensing shape distortion both now vary as a function of position within the images, as is the case for real data. In addition, we introduce the “Star Challenge” that concerns the reconstruction of a variable convolution kernel, similar to that in a typical astronomical observation. This document details the GREAT10 Challenge for potential participants. Continually updated information is also available from www.greatchallenges.info.

Citation

Kitching, T., Amara, A., Gill, M., Harmeling, S., Heymans, C., Massey, R., …Wittman, D. (2011). Gravitational Lensing Accuracy Testing 2010 (GREAT10) Challenge Handbook. Annals of Applied Statistics, 5(3), 2231-2263. https://doi.org/10.1214/11-aoas484

Journal Article Type Article
Publication Date Sep 1, 2011
Deposit Date Mar 21, 2013
Publicly Available Date May 6, 2015
Journal Annals of Applied Statistics
Print ISSN 1932-6157
Electronic ISSN 1941-7330
Publisher Institute of Mathematical Statistics
Peer Reviewed Peer Reviewed
Volume 5
Issue 3
Pages 2231-2263
DOI https://doi.org/10.1214/11-aoas484

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