NGC 2359 - Thor's Helmet

[AUST2000 (Andrew)]

This is my attempt at Thor's Helmet.


A few RGB stars added to a Ha & Oiii base.
6.7 Hours of Ha and 27 Hours of Oiii.


I was surprised at the extent of the nebulosity.


Andrew

[multiweb (Marc)]

Colors are a little odd and there are usually a lot more stars in that field. How did you process the channels?

[AUST2000 (Andrew)]

Originally Posted by multiweb

Colors are a little odd and there are usually a lot more stars in that field. How did you process the channels?

Yes, there are a lot more stars but I reduced the number to focus on the nebula.


Lots of playing with sliders on the colors, so no specific formula. I was trying to come up with something different.

[multiweb (Marc)]

Originally Posted by AUST2000

Lots of playing with sliders on the colors, so no specific formula. I was trying to come up with something different.

To what end? I don't understand. Is it a Ha/Oiii bicolor picture or did you shoot Sii as well?

[AUST2000 (Andrew)]

Originally Posted by multiweb

To what end? I don't understand. Is it a Ha/Oiii bicolor picture or did you shoot Sii as well?

No Sii, but mapped say:
80%Oiii + 20%Ha to Red
70%Ha + 30%Oiii to Green
90%Oiii + 10%Ha to Blue

[Ryderscope (Rodney)]

Mixing channels for different palettes in narrowband images is all part of the fun Paul Maybe a tiny bit of wavelet sharpening to enhance the details in the nebula would provide a small improvement but like the colours, this is in the eye of the beholder. A worthy helmet and cool image.

[multiweb (Marc)]

Originally Posted by AUST2000

No Sii, but mapped say:
80%Oiii + 20%Ha to Red
70%Ha + 30%Oiii to Green
90%Oiii + 10%Ha to Blue

ah ok... seems a bit arbitrary. It would be hard to see where the Ha and Oiii are in the final picture.