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11.4.23. astroML.datasets.fetch_vega_spectrum

astroML.datasets.fetch_vega_spectrum(data_home=None, download_if_missing=True)

Loader for Vega reference spectrum

Parameters :

fname : str

filter name: must be one of ‘ugriz’

data_home : optional, default=None

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

download_if_missing : optional, 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.

Returns :

data : ndarray

data[0] is the array of wavelength in angstroms data[1] is the array of fluxes in Jy (F_nu, not F_lambda)