It seems to fit

Vixen VC200L on Meade's LXD-75 Go-To EQ Mount

So, it all fits together!

The new Vixen scope seems to get along just fine with my old Meade LXD-75 EQ mount. Getting the right counterweight balance is proving a bit tricky as the VC200L is so much lighter than the refractor and I've only two nine-pound counterweights --nothing lighter-- to fit on the mount. We'll make do. The motor drives seem to have no problem with the scope (again, it's lighter than the refractor) and the whole assembly seems to be more stable with the (yet again) lighter load. If the weather forecast comes to fruition, we'll go for First Light tonight! Right now it's partly cloudy but the blue sky that does show is hazy.