Hi all, thanks you very much,
A credit line maybe a bit long and confusing.
Hi Rogelio,
we cannot publish the images without giving credit to all the institutions involved in this project. DSA is working with Descubre Foundation to make this photographic work. Descubre buys time observing time at the CAHA's 1.23m scope for us. On the other hand, I work at the OAUV and I spend a large portion of my day working on this project, so OAUV must be also credited.
All photos signed by the DSA show a very similar style. It would be interesting to see images that use the same principles but with different interpretations, IMHO. The reason for saying this is because as I understand it, the DSA is based on certain principles, not a particular style, and if all DSA-signed images present a similar style it may lead to confusion about what the DSA stands for. Just my opinion, it's your party so run it as you wish.
As responsible of the DSA work at CAHA, I act as "director" of the image processing. Each involved member works in the image, and then I put all together the best part of each result in the final image. As we usually are always the same people, our works tend to have similar aesthetics. :-D
For other works inside the DSA, see SSRO website. They have a different style IMO.
I also see Juan in the credits, I thought he only writes code 
He did a very nice work at the noise reduction steps.
What attracts me the most is the emphasis in the Ha areas on top of NGC 5195, and I think that's what sets this image apart from others of the same object.
There's no special emphasis on these areas. All the H-alpha frame was blended and processed with the R channel in the same way. In fact, the HII areas inside NGC5194 are so much red because to really show the NGC5195 arc we must to multiply the H-alpha channel by 4.
On the other hand, what intrigues me is the strong Ha halo around M51, and I'd be interested in learning more about that, as apparently the ha image doesn't seem to present a significant signal increase in those areas.
See this image with more aggresive histogram adjustment and curves:
The hallo really exists, is not an artifact or a gradient.
Best regards,
Vicent.
Congratulations to the team! It is a new view of M51, and quite a treat.
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