meindertsma

I can't only be due to the NaNs though, as some of the padded frames did align, and some gave the (normal) `MaxIterError`. I don't think I can use 0...

My code is: ``` import numpy as np import astroalign as aa from astropy.io import fits target = fits.open('Combined_band_A13_Lum.fits')[0].data.byteswap().newbyteorder("

I found a workaround: adding the WCS information from the fits files uploaded to astrometry.net to the HDUs of the corresponding fits files in other filters made the issue disappear....

The wcs you use in `reproject_and_coadd` can be used in the fits file of the mosaic. If it is a wcs object, it has a `to_header` method, and if it...