My imaging train consists of a ZWO224 connected to a Celestron 2x barlow which in turn directly goes into my Celestron Nexstar 8SE. I do not use a diagonal. If I try to view Saturn, i don't see anything despite moving the focus from one end to the other. I do not have this problem when the barlow is taken out.
I am using Sharpcap and tried adjusting exposure and gain, but still no joy... I am using the highest FOV on my camera with a solar system alignment.
Lunar imaging with the barlow works fine, but not saturn.. Any ideas what i should do different?