Quote:
Originally Posted by barx1963
Thanks Sab
I have occasionally seen a touch of green in brighter PNs. Not sure if it is an effect of the optics but it is present at all powers so I think not. Maybe atmospheric?
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Might be your darker skies, or even the differences in sensitivity to different wavelengths between each individual set of eyes. I myself haven't actually seen green in any PNe, except NGC 7009, which is a vivid light green. The most common colours by far I see are some shade of blue, white or grey. I remember a thread with several people chiming in with their visual descriptions of IC 418, all varying, which prompts me to think that one individual's eyes are more sensitive to a certain wavelength of light than another's.