I like this photo because it shows the stars inside core. Others imagens that I saw, this core is only a big bright ball.
GSO 305 mm - Canon Rebel XT - 42 min - ISO 200 - 21 x 120 seg - OAG - ASI120MC - Coma Corr.
wide field
http://cdn.astrobin.com/images/a687f...babb8b2006.jpg
detail
http://cdn.astrobin.com/images/a504f...9b6881ac50.jpg