Eta Carinae is a decidedly different object in SII light, I have never seen a filamentary structure around the Keyhole and the dusty detail is much more pronounced.
6 hrs data in SII, 1 hr each for R, G and B images.
Thank you Brent.
It is quite a dramatic change in detail compared to Ha or straight luminance images. I think the weaker SII emission doesn't overpower the image compared to Ha, allowing subtler detail to be revealed through contrast enhancement.
Quote:
Originally Posted by jenchris
stunner.
A great result.
One day someone will mosaic the whole area and get a Nobel prize for it....
A Nobel prize Jennifer? Maybe a tiny recognition in artistic value as there is very little scientific value in the image.
An interesting shot indeed! There are just so many different ways you can image this thing, IR for instance.
Cheers
Steve
Steve,
I looked at other combinations such as using OIII as luminance.
Initially I was reserved using SII luminance as this emission is generally quite weak.
However the Keyhole region where the SII emission really stands out is due to a boundary condition where ionizing UV radiation from Eta Carinae has petered out due to absorption. At the boundary the SII emission is the strongest due to the lack of ionizing radiation that would lead to Ha and to a lesser degree OIII emissions.
That's a great looking and fascinating image. This nebula shows so many details in the various bands. Cool to see this famous area in a new light, literally
I very much enjoyed doing my IR version of this nebula too last year.
What about a UV version Steve, is that feasible?
That's a great looking and fascinating image. This nebula shows so many details in the various bands. Cool to see this famous area in a new light, literally
I very much enjoyed doing my IR version of this nebula too last year.
What about a UV version Steve, is that feasible?
Thanks Rolf,
I did a 6 hrs luminance NUV imaging with an ST-X10ME, but cancelled the project as it didn't appear to be terribly different from a visible light luminance image.
Very smooth and detailed Bert, sort of easy on the eye, but the background is bright so a lack of dynamic range I think and the colour is subdued. Thats entirely subjective though. Does lack "pop" as a result though IMO, but popping is not everyones cup of tea.
There was a heated discussion on Ray Gabanys "boosted colour" presentation at AAIC13. He reckoned you have to to get the hoi polloi,s attention for longer than 5 seconds. Thats if you care about that of course.
Very smooth and detailed Bert, sort of easy on the eye, but the background is bright so a lack of dynamic range I think and the colour is subdued. Thats entirely subjective though. Does lack "pop" as a result though IMO, but popping is not everyones cup of tea.
There was a heated discussion on Ray Gabanys "boosted colour" presentation at AAIC13. He reckoned you have to to get the hoi polloi,s attention for longer than 5 seconds. Thats if you care about that of course.
Fred,
It's Steven not Bert. Perhaps you are critiquing a different image here.
