blending-toolkit 1.0.0a9

Blending ToolKit

BlendingToolKit

Summary

Framework for fast generation and analysis of galaxy blends catalogs. This toolkit is a convenient way of producing multi-band postage stamp images of blend scenes.

Documentation can be found at https://lsstdesc.org/BlendingToolKit/index.html

Workflow

• In red are the BTK objects that can be customized in various ways by BTK users.

Running BlendingToolKit

• BlendingToolKit (btk) requires an input catalog that contains information required to simulate galaxies and blends. This repository includes sample input catalogs with a small number of galaxies that can be used to draw blend images with btk. See tutorials to learn how to run btk with these catalogs.
• CatSim Catalog corresponding to one square degree of sky and processed WeakLensingDeblending catalogs can be downloaded from here.
• Cosmo DC2 catalog requires pre-processing in order to be used as input catalog to btk. Refer to this notebook on how to convert the DC2 catalog into a CatSim-like catalog that can be analyzed with btk.

Installation

BTK is pip installable, with the following command:

pip install blending_toolkit

Although you might run into problems installing galsim. In case of any issues, please see the more detailed installation instructions here.

For required packages, see the requirements.txt file.

Tutorial

You can check out our introduction tutorial and get acquainted with BTK in a binder instance (no installation required) by simply clicking here.

Contributing

See CONTRIBUTING.md