astropy.io.fits.hdu.base:NonstandardExtHDU

Extended Summary

This class is used for an Extension HDU when the XTENSION Card has a non-standard value. In this case, Astropy can figure out how big the data is but not what it is. The data for this HDU is read from the file as a byte stream that begins at the first byte after the header END card and continues until the beginning of the next header or the end of the file.