Ok, a bit goofy but I got both Neptune and Uranus with my 6SE at f/25 on a couple of night doing Mars (Mars is oriented correctly so both Neptune and Uranus are), nothing but a blue fuzzy ball for Uranus and a comet-like looking spread out smaller fuzzy ball for Neptune after stacking (<- don't laugh now). Neptune was a verrrrry dim spot in the FOV during real-time video. To be honest I was surprised I could even see it. ...
Uranus on 11-4-2020...

And an awful stacking of Neptune taken on 11-9-20...

Edited by rnyboy, 20 December 2020 - 12:09 PM.