Thank you, Marc. Would be better, but the weather here is very bad. Strong and continuos winds (up to November, with speed between 10 - 20 km/h ! ) and high density of atmosphere. The seeing ... , is negative ! But it was done !
Thank you, IanP. I agree with you. It could be better. I have another photos of them, 2012, and the number of stars is higher. However, I see better resolution of core, mainly ngc6397.