[Credit and Copyright: J-P Metsävainio (Astro Anarchy)]
Bfl
“Since this weekend marks the 20th anniversary of the launch of the Hubble telescope, I thought it would be worthwhile to explain the false-colour images taken by the Hubble’s cameras — why they’re in false colour, what the colours represent, and how it’s done.
False-colour astrophotography is not unique to Hubble; it’s used at observatories on the ground around the world, and by professional and amateur astronomers alike. I could do it myself, down the road. So here’s my best stab at explaining it. ...”
see link for his explanation...
http://www.mcwetboy.com/mcwetlog/2010/04/falsecolour_astrophotography_explained.php
Oooooooo! Ahhhhhhhhhh!