[Lee]

Originally Posted by ballaratdragons

You have captured the faint outer regions in the lower left and centre right, and have balanced it nicely to have no burnout in the core!!! Well done

Thanks Barb and David.... I feel like I'm cooking with gas now!

Thanks Ken - I just duplicated the background in photoshop, then adjusted the bottom layer to show core detail - then stretched the top layer to show the outer regions, which of course burnt out the core badly - then just layer mask out the burnt core from the top layer to show the nice one underneath.... So the detail is all present in the original 16 bit data - I didn't need any shorter exposures to get the core detail.