Quote:
Originally Posted by alpal
Hi Alistair,
I had a quick go at the FITS file for RGB.
It didn't come out blue at all but quite red.
I'll have to have another look tomorrow as I'm confused.
It came out like this.
cheers
Allan
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hi Allan,
yep, not sure why it had an orange cast, but a color wipe in startools removed that and shifted it to blue. I did some adjustments in the color module to reduce the red bias, hence the blue.
It was at an altitude of around 38degrees when I imaged it, so it can't be light pollution that normally shows up even in dark skies if you go below 25 degrees, so not sure why.
I think I applied the measured G2V ratio for my filters and ccd when combining in maxim, I'll try again without any change in ratio.
the ratio I measured in ccdautopilot was 1.13:1:1.32 R:G:B.
edit: I did a combine with a 1:1:1 ratio and its a lot more yellower. the G2V ratio gives a manageable white balance.
Cheers
Alistair