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Hello Doug:
The photo was realised with filters of Narrow band, and during the processing, I used the CFHT (Canada, France Hawaii Telescope) Palette, where the Hydrogen-alpha photo is the red color, of there those tones predominant oranges.
Thank you very much to come to see the photo and coverall, by your commentaries.
I only take the photos to 14 kilometers from distance of a city of 5 million population, for that reason it is impresindible the filters of narrow band.
Also I go to the field, and I am useful to make photos of color conventional.
Many greetings
Cesar
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