gdpyc is a Python 2/3 astronomy package for calculating Hydrogen column density and optical extinction. gdpyc offers functionalities similar to the nh tool included in HEASoft, or on-line web services like HEASARC’s nH or IRSA’s Galactic Dust Reddening and Extinction.
This package uses HEALpix maps provided by NASA’s LAMBDA service. Please cite the original papers and authors of the surveys if you use this tool for your research.
Changelog
- Proper treatment of UNSEEN pixels in gas and dust maps.
- Small changes in code style.