Hi all,
I have seen M42 show both a greenish tinge and pink and peach tones. This is often aperture, exit pupil, observing condition and most importantly, observer dependent.
In my 18" Obsession I usually get very delicate pinks under dark skies. In my 10" and 14" scopes I usually get a slightly greenish tinge.
If you observe M42 at dusk, before full dark, it takes on a very green tinge, in all apertures over about 8". This colour perception will diminish as full darkness sets in.
In the 25" Obsessions and the 30" SDM you certainly get a perception of colour in a greater number of objects than you do in sub 20" apertures, but it is still very subtle.
Cheers,
John B
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