Quote:
Originally Posted by mental4astro
* There are a few exceptions. Planetary nebulae as many of these will display a distinct bluish/green colour. M42 is bright enough that it too can appear bluish/green, here depending on the quality of colour rendition of your eyes. Bright reflection nebula can show blue - I saw a distinct purplely/blue colour in M20 with my 17.5" - most extraordinary as purple is one colour our eyes just don't see at low light levels, but there it was!
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I'm partly colour blind, but is the actual colour in those nebulas aqua green or just plain aqua?
I've noticed checking around the net that some people think Aqua should be considered a colour in its own right, rather than being lumped in with green.
Certainly, to my limited colour vision, whatever that colour is in nebulas, it looks nothing like my lawn grass, but a lot like the "green" I see in some traffic lights.
Cheers,
Renato