M13 superb globular cluster in Hercules

It's summer time....exactly perseid time!!!.....my friend David wants to look the sky with a telescope and its nice little villa located in Marsia (Abbruzzo, italian Appenini Mountains) is a beautiful place to observe summer great deep sky objects!!!...

While using my 20x110 GHT binocular to observe the celestial wonders....camera, telescope and computer are at work to collect some photons.....

This is M13, probably the most impressive globular cluster in the summer sky.....

(click to enlarge)

Image is a crop from a median stack of 12 x 180 sec. images, no flat, no dark, no bias.
Technical info: TS152 + H694 + Sx AO-LF
Mount: Eq6 + TDM