You forget - I was an astronomy nerd once, too. 10" Coulter Optical with Telrad, a couple plossls and a handful of planetary filters. Sketchbook full of Messier objects, the whole nine yards. Then I moved to Puget Sound and suddenly there were five (5) Plieades.
I'm guessing you need 170FPS because of the stacking? Now explain to me the differences between your twitchy little security camera and Monsters of the Deep like this. I mean yeah. The sensor is eight times as big. The resolution is half, though. And holy fuck you can now buy adaptive optics for under a grand.
Somewhere I've got a picture of me next to a 25" Obsession. Once I started living near the ocean, though, that became a serious waste of money even to dream about.
I pointed this place out to my wife once. She said "eh."