Quote:
Originally Posted by strongmanmike
Yep...red it is 
The shade of red is the issue and whether any other subtle hues can be revealed. I have seen plenty of version like yours with more of an orange tint and little or no colour variation but there is colour there and selective processing and some decent amount of RGB data is probably necessary to really show it.
Nice work Andrew
Mike |
Thanks Mike - There's definitely some signal in the blue channel, but in my data at least it's a lot harder to get out than the red! There's a lot more interstellar dust in the line of sight, which is presumably why it appears more blood-red than the other HII regions nearby.
Assuming the actual source of the light is dominantly H-alpha emission, we know exactly what colour it is, right?
cheers!
Andrew.