fits_ccddata_writer

astropy.nddata.fits_ccddata_writer(ccd_data, filename, hdu_mask='MASK', hdu_uncertainty='UNCERT', hdu_flags=None, key_uncertainty_type='UTYPE', **kwd)[source]

Write CCDData object to FITS file.

Parameters:
filename : str

Name of file.

hdu_mask, hdu_uncertainty, hdu_flags : str or None, optional

If it is a string append this attribute to the HDUList as ImageHDU with the string as extension name. Flags are not supported at this time. If None this attribute is not appended. Default is 'MASK' for mask, 'UNCERT' for uncertainty and None for flags.

key_uncertainty_type : str, optional

The header key name for the class name of the uncertainty (if any) that is used to store the uncertainty type in the uncertainty hdu. Default is UTYPE.

New in version 3.1.

kwd :

All additional keywords are passed to astropy.io.fits
Raises:
ValueError
  • If self.mask is set but not a numpy.ndarray.
  • If self.uncertainty is set but not a StdDevUncertainty.
  • If self.uncertainty is set but has another unit then self.data.
NotImplementedError

Saving flags is not supported.