[pkinchington (Peter (Kanga))]

I've had another try at eta carina. This time I used a modified dslr camera to show more of Halpha . This image is stretched but not colour balanced etc. Fogged lens caused problems with haloes around stars - my next purchase is a dew heater. What is the best way to get blue back into the image that I see when using an unmodified dslr? I used a moon and skylight filter.
Cheers Kanga