Thanks for the positive comments all!
David - An image starts to look overcooked when the stars become unnatural looking, or when any more adjustment only creates more noise etc.. I have many examples on my computer, but if you look in the bottom right hand corner of the M8 image you'll see its really grainy looking, thats a sure sign of overcooking an image.. Basically its just trying to get more data out of an image than what is actually there.
Marc, Yeah the ST9 blooms like all hell given enough exposure time. Im currently in deep saving at the moment, however I've secured an external guiding setup, filter wheel for the ST9 and will invest in a 7nm narrowband filter set in order to subdue the stars... the 13nm filter definitely helped, however I think going narrower is the key to stopping blooming.. I know you can process blooms out, however Im not exactly sure on how to do this yet.. Google has the answer im sure.
