greg 2005-08-02 8:38
Beautiful shot, David. Is the light from the left from the Moon?
Although stars do have colours, I'm not sure you can trust the colours that a typical digital camera shows you in this case. If the light from the star is well-focussed, it falls on a single pixel of the sensor array. And these pixels have alternate red, green, blue (or GRGB) filters over them. If you hit a red one, I suppose you get a red star...
Cameras used for astronomy don't have this filter array, but get their colours by making several exposures through different (whole-image) filters.
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Hey Greg, this is so true, but I hadn't really thought of it. Thanks!
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