North America Nebula (emission line)

[Paramount]

Hi
Trying to make the most of the clear nights, no clouds last night so was able to do
6x10 min Ha
8x10 min OIII
8x10 min SII
all unguided with the TMB 115 on the Paramount and the Starlight Xpress H36
Processed SII (red) Ha (green) and OIII (blue)
Less noisy than my earlier efforts but still want to try for more longer subframes, Very pleased with the field flattener and filter wheel
Thanks for looking
Regards
Gordon


http://www.imagingtheheavens.co.uk/U...ica-nebula.jpg

[seeker372011 (Narayan)]

dont recall ever seeing this in colour mapped narrow band-very interesting

[jase (Jason)]

Making progress Gordon. Longer subs has helped with the noise control. I would have expected a more dynamic display of colours given the SHO palette. If you are using clipping masks you should be able to achieve this. With narrowband images, I wouldn't recommend using an RGB combine and equalising the background. You'll loose to much range in each emission line due to the auto background equalisation process.