AstroArt: Aligning Colours

[cuivenion]

Hi, I'm looking at purchasing AstroArt and I'm trying out the demo at the moment. It seems to work great for processing, but I can't get good results when stacking. This is a test stack of M31:

I'm pretty sure I have the right demosiac pattern chosen, and I'm thinking I need to align the colours like I do in DSS. Only problem is I have no idea how to do this in Astorart. Any help greatly appreciated.

[steppenwolf]

I don't use AA but to my eye, I suspect that you are using the wrong De-Bayering method but I'd wait for an AA user to chip in too!

[cuivenion]

Thanks for the reply. Tried all the patterns and this is the  one that came closest. It also matches the bayer pattern I use in DSS, which is definitely right.

[steppenwolf]

Cool - it is a weird colour shift though!

[cuivenion]

I'll check it again, it's frustrating though, otherwise it's a great bit of kit.

[Freddie]

Contact the guys at AA. I have always found them to be very helpful.

[cuivenion]

Thanks for the replies, I'll try the guys at AstroArt.

[ollypenrice]

You should not need to colour align data channels from a one shot colour camera. They have no opportunity to misalign themselves since they are captured at the same time on the same chip. That won't be the problem.

Your histogram is weird, though, with green particularly odd. I'm afraid that it's so long since I did OSC in AA that I can't remember the drill. What happens if you move the green black point in until the green peak aligns with the others?

Olly

[cuivenion]

Olly, this is what happens (If I'm doing it right):

Could it be a problem with the colour bias? This is what I get when the colour bias is set to rgb instead of average (in demosiac) the histogram looks correct but the colours still look wrong in the image.

AA also seems to give me a blown out core after stacking, which DSS doesn't. This is the same data stacked in DSS with no processing.