adrn / sfd

Schlegel, Finkbeiner, David dust maps in Python.

SFD

Schlegel, Finkbeiner, David dust maps.

Installation

The dust map data is stored in this repository using git-lfs. Clone the repository and install using

python setup.py install

Dependencies

This requires scipy, astropy, and numpy. Install with

conda install numpy, scipy, astropy

or

pip install -r pip-requirements.txt

from the top-level of the cloned repository

Usage

import astropy.units as u
import astropy.coordinates as coord
from sfd import ebv, reddening

c = coord.SkyCoord(ra=[154.12, 11.1]*u.degree,
                   dec=[-21.63,31.65]*u.degree)

EBV = ebv(c)

# or

reddening = reddening(c, survey='PS1', filters='gri')

Coefficients

Pan-STARRS from Schlafly et al. 2011

Others from https://arxiv.org/abs/1301.1427

sfd's Issues

FITS I/O error

I'm not sure if this repo is being actively maintained anymore (though I do see a commit from 18 days ago, so hopefully!), but I was asked to use it for a certain project. When I try to run the ebv() function, I get an OSError from astropy.io.fits.header complaining that the dust map FITS files are missing header END cards.