martinkilbinger / shear_psf_leakage

Computes leakage of PSF and other quantities to weak-lensing shear measurements

Shear PSF leakage

About

This library quantifies the PSF leakage on weak-lensing galaxy shear
measurements. It computes the following quantities:

• The object-wise PSF leakage at linear and quadratic order, using regression.
• The object-wise dependency of galaxy shear to other (scalar) observables.
• The scale-dependent PSF leakage function galaxy - PSF leakage using
  two-point correlation functions.

Installation

The fastest way to Install this library is with pip automatically from pypi.org,

pip install shear_psf_leakage

Alternatively, you can use TBD

Authors

Martin Kilbinger [email protected]

Clara Bonini

Sacha Guerrini

Axel Guinot

shear_psf_leakage's Issues

xi_sys and alpha errors

The errors obtained under Gaussian error propagation for xi_sys and alpha need to be revised and checked.

galaxy size for object leakage

Galaxy size in input catalogues is sometimes FWHM, sometimes T, sometime another quantity.
Add a flag to indicate the type, in particular if it is proportional to size (FWHM) or area (T).