11.4.22. astroML.datasets.fetch_sdss_filter

astroML.datasets.fetch_sdss_filter(fname, data_home=None, download_if_missing=True)[source]

Loader for SDSS Filter profiles


filter name: must be one of ‘ugriz’

data_homeoptional, default=None

Specify another download and cache folder for the datasets. By default all data is stored in ‘~/astroML_data’.

download_if_missingoptional, default=True

If False, raise a IOError if the data is not locally available instead of trying to download the data from the source site.


data is an array of shape (5, Nlam) first row: wavelength in angstroms second row: sensitivity to point source, airmass 1.3 third row: sensitivity to extended source, airmass 1.3 fourth row: sensitivity to extended source, airmass 0.0 fifth row: assumed atmospheric extinction, airmass 1.0