legacypipe

DESI Imaging Legacy Surveys data reduction pipeline, using the Tractor framework

The license is 3-clause BSD.

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Code for the analysis of the Legacy Surveys (DECam/DECaLS, MzLS+BASS)

Some notable contents:

• legacyzpts/legacy_zeropoints.py -- code for computing photometric and astrometric zeropoints of Community Pipeline-calibrated images
• bin/runbrick-shifter.sh -- template script for our large-scale runs at NERSC
• legacypipe/runbrick.py -- the top-level script to reduce one Legacy Surveys brick.
• docker-nersc -- Dockerfile recipe for an Intel-compiler optimized build of the code, used in production
• docker -- a generic/public Dockerfile

The Docker containers we use in production are available on Docker Hub: https://cloud.docker.com/u/legacysurvey/repository/docker/legacysurvey/legacypipe

Requirements include

• Python 3
• numpy
• scipy
• matplotlib
• fitsio
• astropy
• photutils
• astrometry.net
• tractor
• cython