AutoLens: Automated Modeling of a Strong Lens's Light, Mass and Source

1 code implementation • 24 Aug 2017 • James Nightingale, Simon Dye, Richard Massey

This work presents AutoLens, the first entirely automated modeling suite for the analysis of galaxy-scale strong gravitational lenses.

Cosmology and Nongalactic Astrophysics Astrophysics of Galaxies Instrumentation and Methods for Astrophysics

An improved model of Charge Transfer Inefficiency and correction algorithm for the Hubble Space Telescope

1 code implementation • 6 Jan 2014 • Richard Massey, Tim Schrabback, Oliver Cordes, Ole Marggraf, Holger Israel, Lance Miller, David Hall, Mark Cropper, Thibaut Prod'homme, Sami-Matias Niemi

Read noise is added after charge transfer so does not get trailed - but it is incorrectly untrailed during post-processing.

Instrumentation and Methods for Astrophysics Cosmology and Nongalactic Astrophysics

The Stability of the Point Spread Function of the Advanced Camera for Surveys on the Hubble Space Telescope and Implications for Weak Gravitational Lensing

no code implementations • 6 Feb 2007 • Jason D. Rhodes, Richard Massey, Justin Albert, Nicholas Collins, Richard S. Ellis, Catherine Heymans, Jonathan P. Gardner, Jean-Paul Kneib, Anton Koekemoer, Alexie Leauthaud, Yannick Mellier, Alexandre Refregier, James E. Taylor, Ludovic van Waerbeke

We derive a parametric correction for the effect of CTE on the shapes of objects in the COSMOS field as a function of observation date, position within the ACS WFC field, and object flux.

Polar Shapelets

1 code implementation • 24 Aug 2004 • Richard Massey, Alexandre Refregier

The shapelets method for image analysis is based upon the decomposition of localised objects into a series of orthogonal components with convenient mathematical properties.

Image Manipulation