shapelens: Astronomical image analysis and shape estimation framework
Abstract
The shapelens C++ library provides ways to load galaxies and star images from FITS files and catalogs and to analyze their morphology. The main purpose of this library is to make several weak-lensing shape estimators publicly available. All of them are based on the moments of the brightness distribution. The estimators include DEIMOS, for analytic deconvolution in moment space, DEIMOSElliptical, a practical implemention of DEIMOS with an automatically matched elliptical weight function, DEIMOSCircular, which is identical to DEIMOSElliptical but with a circular weight function, and others.
- Publication:
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Astrophysics Source Code Library
- Pub Date:
- July 2021
- Bibcode:
- 2021ascl.soft07015M
- Keywords:
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- Software