greetings, I took some piccies with my new (second hand, purchased from IIS trades!) 450D and a clip in CLS CCD filter. There was really no light pollution I could deal with but my neighbour has a massive screen TV which leaks light underneath the blinds and across about 30 metres to me. I was facing the other way but my photos seem to have more of a blue cast than usual. This picture of about 8 minutes stacked with dark frame calibration of Eta with cluster NCG 2393 and emission nebula 3324 a case in point. I 'capped the green' in Star Tools but what do I do next?
Graz
