In describing the light pollution of the Three Peaks lacks the analysis with the contours of the intensity of the sky but I did article on Peralba (for the Three Peaks I did because I think that the night is not the typical situation).
The contour lines were obtained in Mathematica , drawing the picture in RAW linear exported. E ', however, can get something similar in a simple way: just turn the photo into 16 levels of gray. The photo above is an example here. Compared Mathematica is lost in the association-level intensity surface, but this type of processing is still useful to understand how far the light pollution from spreading and that direction is.
For example, in the process here can be easily distinguished above the dome of light separated from the group of Udine the Venetian plain. It is also seen, despite the free horizon makes it more obvious the dome of Udine, than those of the Veneto plain stretching a bit 'higher up and over a wider horizon. So the bulk of light pollution in the Three Peaks comes from the Veneto plain. From the site of observation the horizon in that direction is a bit 'hidden so perhaps it is missing. However, it is clear that a few hundred feet above the air is illuminated for the most part from this source. This confirms
maps Cinzano, who say that the more you go east (away from the plains) and better (even better would be to go to the North East).
It 'also interesting to observe how the dome light and the Auronzo Misurina not come even horizon.
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