Thanks Max ,
For each object my camera capture settings :
Output Format=PNG files (*.png)
Binning=1
Capture Area=4656x3520
Colour Space=MONO8
Hardware Binning=Off
High Speed Mode=Off
Turbo USB=100
Flip=None
Frame Rate Limit=Maximum
Gain=287
Exposure=120
Timestamp Frames=Off
Brightness=0
Gamma=46
Temperature=-26
Cooler Power=20
Target Temperature=-26
And magnitude limits for the pictures is about 22 !!!!! in M 106 :
And a Quasar near NGC 4565 ! :
Etienne
