|
Chris , regarding your original questions, yes you can stack subs of
different duration successfully in DSS; I also routinely stack subs
of different ISOs.
As you can see from my attached pic, 2070 is near the bottom edge of
the LMC, but far enough in for your entire 1000mm f/l image to be
within the galaxy, hence no change of star colour or density in your image. Mine was taken at 50mm, so you can see that nothing longer than around 85mm wil make a pleasing image of the whole of the LMC.
raymo
|