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Usage¶

To use lenstronomy in a project:

import lenstronomy

Getting started¶

The starting guide jupyter notebook leads through the main modules and design features of lenstronomy. The modular design of lenstronomy allows the user to directly access a lot of tools and each module can also be used as stand-alone packages.

Example notebooks¶

We have made an extension module available at https://github.com/sibirrer/lenstronomy_extensions. You can find simple examle notebooks for various cases. The latest versions of the notebooks should be compatible with the recent pip version of lenstronomy.

  • Units, coordinate system and parameter definitions in lenstronomy

  • FITS handling and extracting needed information from the data prior to modeling

  • Modeling a simple Einstein ring

  • Quadrupoly lensed quasar modelling

  • Double lensed quasar modelling

  • Time-delay cosmography

  • Source reconstruction and deconvolution with Shapelets

  • Solving the lens equation

  • Multi-band fitting

  • Measuring cosmic shear with Einstein rings

  • Fitting of galaxy light profiles, like e.g. GALFIT

  • Quasar-host galaxy decomposition

  • Hiding and seeking a single subclump

  • Mock generation of realistic images with substructure in the lens

  • Mock simulation API with multi color models

  • Catalogue data modeling of image positions, flux ratios and time delays

  • Example of numerical ray-tracing and convolution options

  • Simulated lenses with populations generated by SkyPy

Table of Contents

  • Usage
    • Getting started
    • Example notebooks

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