Hello has all.
Here is an image of NGC 4725 and his friend NGC 4712.
There is a reflection of the primary mirror on my image?
I do not think has a probleme of flats, because I am good has 34000 ADU??
Date Imaged / 3 and 7 april 2013
Lens / C9 at f/10
CCD / QSI 540 WSG
Baader filter , Exposure / L = 30 x 600 SEC
Mount / AP1200
Sandro Observatory (Parisian suburb) .
http://img15.hostingpics.net/pics/24...NGC4712FIN.jpg
bye!
@lex
