As I haven't managed to get any subs yet, can anyone reommend a link where I can find unprocessed stacked immages to get some processing practice in.
Here's one: http://www.markshelley.co.uk/webdisk/m31comp64v2.tif (36Mbyte 3474x2314pixels)
Here's the thread that discusses it: http://forum.orpington-astronomy.org.uk/index.php?topic=5207
Thanks Mark. ;)