The Twilight 1 can handle a lot more with some work. Stock form the Twilight 1 suffers at two main points, the arm (it's hallow and twists and lacks mass) and the primary issue is actually the connection of the mount head to the tripod. This is the weakest point, the tripod connection. Even with everything tight, it has some play to it and this will be realized on any scope you put on it pretty much, even the light weight ones, when you are operating at similar magnifications. If you brace the Twilight 1's arm (cut hard wood block slightly larger than the space in the arm and tap it into place, or brace with aluminum plate on its inside) it will handle things a lot better. And if you replace the tripod connection point with something more sturdy, the head can handle much larger and longer scopes that people would ever imagine. That tripod connection is the weakest point though. Anyhow, there are lots of threads in the Mount forum on this particular mount and how to do these simple fixes to make it a very good little mount.
I pier mounted my Twilight 1 head (it connects with 3 bolts instead of 1 center bolt) and braced the arm and it bosses around my 120mm F8 refractor just fine whereas it was literally not usable at all even at low power in its stock form.
Looks like you already got an 80mm so that solves that. If you were to re-consider, I would absolutely urge you towards a 102mm. The extra aperture matters a lot on all subjects and a 4" is about the largest (F6~F7) refractor you can go "Grab & Go" with before things get hairy. The classic ED80 refractors are about as big and heavy as a modern 4" refractor is and it's only a 4 inch difference in length.
Edited by MalVeauX, 19 September 2021 - 08:47 AM.