About the library Astropy
Test Run script projection with 3 parameters. The first is the fits of reference, the second is the fits that will be projected with the reference, and third is the name of the new file fits.
./script/projection.py [reference fits] [projectable fits] [name file.fits]
./script/projection.py data/tile-1.fits data/tile-2.fits tile-1_2.fits