I am a bit concerned about this image as it hasn't present the same problems as my previous dabbles in NB imaging. When I have tried I have had horrible purple halos around the stars but no such problems with this one. I am still not sure that I have the processing right.
The data was collected over 3 nights. I was surprised that the 13.5 hours of Ha, SII and OII data (20 minute subs) still produced quite a bit of noise. After stacking combining (Hubble pallet) in CCDStack I adjusted levels and curves in PS, used Noise Ninja to reduce noise and a high pass filter to sharpen it some.
I think it looks great. Was that the field of view through the 110 or is it cropped?
Again thanks and yes it is a crop. I think I have found a bit of a bug in CCD Commander and some of the data was a little displaced to the rest so I had to crop it to the common area. CCD Commander seems to have a problem if you mix J2000 and J now co-ords in a single action list even if they are not for the same target.
Hi Rob, I've also been looking at this one between clouds this week and I think you'll get a more pleasing result if you mix it as a bicolour. ie: Ha as Red, O3 as Blue and mix Ha+O3 together for green. It doesn't seem to have any significant S2 component, just like the Helix, so a bicolour should come up looking more like a RGB image and give you more red in the tendriles.
Hi Rob, I've also been looking at this one between clouds this week and I think you'll get a more pleasing result if you mix it as a bicolour. ie: Ha as Red, O3 as Blue and mix Ha+O3 together for green. It doesn't seem to have any significant S2 component, just like the Helix, so a bicolour should come up looking more like a RGB image and give you more red in the tendriles.
Thanks for the tip. Here is the result. It's not so fluoro..
