Thank you Rick and Simon.
The clouds give me permisssion, but the presence of fog didn't make a good contrast.
Better detail of nebula, but it is more extensive than captured.
It is a very beatiful region ! More than a Canon can do !
http://www.irida-observatory.org/Nam...B-asterisk.jpg
But nevertheless the cluster ... it was done !
GSO 305 mm - Canon T 3 - ISO 800 - 1 hour - OAG - Coma Corrector - Skyglow filter
large scale:
http://www.astrobin.com/full/92872/0/