Thanks to weather and my high integration times my projects usually span several weeks, perhaps a couple months. It never fails that during that time some rotation is introduced into the image train, either due to maintenance or a component spinning loose etc.
It would be nice to have the ability, say in the frame and focus routine, to provide a reference frame and then be able to measure or display any rotational offset and correct it.
I can also see such a routine being helpful planning and executing mosaics when an auto-rotator is not used.
Thanks,
Kevin