With almost the same processing as my previous M63 image, please find my image of the M64 galaxy aka Black Eyed Galaxy: using a 16" dobson telescope at 1800mm FL, Sony A7s DSLR and Siril with a stack of 10000 images.
Thanks for your message @rbarbera. Sorry for my late reply
Ok sorry it was not clear in my original message: there is no remaining field rotation in the stacked image (global star alignment take care of it), but because of rotation, during stacking some portions of the image are not present in all the rotated images especially in the corners: for example depending on the reference image, the corners may have only 50% of the 10000 images with pixels to stack in the final image. This require to crop the final image because of this field rotation consequence.
Now all it’s clear :). Yes, with the field rotation you loose field… from each frame, but the common/aligned portion must looks fine. I’ve misunderstood you. Thanks for your explanation.