Here is an article that I learn the masking technique from http://www.astropix.com/PFA/SAMPLE4A/SAMPLE4A.HTM
HOWEVER, I dont know whay they say in point 4 to paste the LONG exposure into the mask, I get much better results if I pase the SHORT exposure into the mask. That was the inner detail of the short exposure appears, and the faint outer detail of the long exposure is maintained.
Interesting Scott. I have always pasted the long exposure into the maks and manipulated it to allow the shorter exposure to come through.
I can see that we will have to get together around a computer one day.
Thanks.
Yes I tried using the long exposure but wasnt happy with the result, it seemed to dim the outer detail a bit, unless I wasnt doing it quite right, but using the short exposure in the mask did the trick.
Scott