Rosette in narrowband

I'm just learning this narrowband stuff, and have not quite figured out the colors, but I was glad to see I could take something from my suburban home under a substantial moon last night.

Alex

Attached Image:

WOW! What scope, camera, exposures etc.?

Hi Alex,

That's a neat image, and an interesting palette as well!

The popular Hubble Palette (SII=Red, H-alpha = Green, OIII=Blue) can be a pain to work with, as the H-alpha tends to overwhelm the image, turning it mostly green.

One means of avoiding this is to stretch the three channels to where their histograms are similarly sized. Which tends to bring out a lot of noise in the SII and OIII channels (which typically have a ton less data than the H-alpha).

Another technique, which yields aesthetically pleasing results, can be seen here:
http://bf-astro.com/hubbleP.htm

HTH,
Eric