Quote:
Originally Posted by Craig.a.c
I like the first pic, very nice.
Just a quick question - Why is it that shots people post of nebulas, they are most of the time red?
|
They're red because the light you see is coming from singularly ionised Hydrogen (a HII region). Ionised Hydrogen shines in the red region of the spectrum...specifically at 656.3nm, what they call Hydrogen-alpha.
BTW...Nice piccies, Scott