Hello to all:
With filters of Narrow Band, I took this photo from M17 and I made several combinations of color on the basis of the different astronomical laboratories.
Trowel HST (Combination of color like the laboratory of the Hubble Space telescope):
Trowel CFHT (Combination of color like the laboratory of Canada France Hawaii Telescope):
Another Trowel, own combination:
The sum of the three previous ones:
And a mosaic:
Thanks to happen to see.