load_onedstds

specreduce.calibration_data.load_onedstds(dataset: str = 'snfactory', specfile: str = 'EG131.dat', cache: bool | Literal['update'] = True, show_progress: bool = False) → Spectrum | None

This is a convenience function for loading a standard star spectrum from the ‘onedstds’ dataset in the specreduce_data package. They will be downloaded from the repository on GitHub and cached by default.

Parameters:

datasetStandard star spectrum database. Valid options are described

in Spectrophotometric Standards.

specfileFilename of the standard star spectrum.

cacheEnable caching of downloaded data.

show_progressShow download progress bar if data is downloaded.

Returns:

spectrumIf the spectrum can be loaded, return it as a Spectrum.

Otherwise return None. The spectral_axis units are Å and the flux units are milli-Janskys.