v1.9 [Aug 26, 2021]
Update to the alignment algorithm to correct a problem with bad alignment that was seen on some M1 Macs.
Reduced memory usage, particularly in the case where intermediate results are stored in a temp file instead of in memory.
v1.0 [Dec 31, 2012]
Improved performance for scrolling and painting.
Fixed problem where display of composited image might not be updated properly after completion of final composite.
Improved image quality when images are not all the same brightness. (Input images should all be equally bright for best image quality).
Changed order of input images from unspecified to sorted by file name.
Is an image procesing program that is oriented primarily toward astrophotography
