Oniichan

```python #Allgignment of Images image_path='image path' filename='image / file name' files=sorted(glob.glob(os.path.join(image_path,filename))) print(len(files)) ref_image=fits.open(files[0], ) reference_image=ref_image[0].data for i in range(0,len(files)): image_data=fits.open(files[i]) source_image=image_data[0].data + 0 #here the addition of zero (0) solves...

i hope it helps