|
I've spent some time playing with this today. I can reduce the impact of the stray coloured pixels when combining using the HST option in Combine and setting the Luminence factor at 100%.
However, there seems to be a consistent mismatch between the R and G/B frames when combining. This results in heaps of colour noise. Have a look at the screenshot attached. This is after DD in Maxim and then a manual stretch in Photoshop. The red frames don't line up with the G/B (which appear aqua) - they seem shifted down and slightly to the right. This is odd as it appears in both Astrometric and Auto-Correlation alignment modes. More oddly (to me anyway) is that the stars display no shadowing - ie there is no difference in colour in the star images themselves.
This image comprises about 1 hour of L and 50 minutes each of R, G and B.
So what am I missing? Is it a processing issue or a combine issue?
I'd welcome any comments.
Pete
|