I use Astro Photography Tool (APT) software to assist with collecting (mainly) DSO images. I use a Canon 77D DSLR, APT (3.84) and I'm attempting to use the camera Liveview function with APT to assist focusing (Lens Control function).
The problem is that even at ISO 25600 and simulated 30" exposure there's nothing to see to focus with via the APT LiveView display, yet a test shot at these settings shows plenty of stars on the downloaded image.
Is there a setting somewhere I've missed; perhaps something in relation to exposure simulation, is the sky simply too dark (although, having said that, 30" at ISO25,600 shows lots of stars!)
I'd appreciate any thoughts any one may have