Hi Nicholas,
Welcome to the group!
You've come to the best place on the web to do your research and inquiries.
I don't know anything about the Onstep. I'm more of an original system is best kind of guy.
I own a GM811G HD, with the Gemini II control. Love it!
When you get something someone else has modified, such as adding an Onstep system, it makes it complicated because you have to seek advice from others with that system, and here, for example, to figure things out.
Scott Losmandy and Brian both advised me when I picked up my mount at the factory, "Just use it as it is, don't mess with it." Sage advice, my mount has been great for me! (Born 04-Feb-2020)
Like anything, there is a learning period. Once you grasp the methods, these are really outstanding mounts.
I've been able to add some things, a 12" extension, hand knobs for quick assembly, the RAEXT kit, And last night adjusting in my Guide Scope piggy backed to my main telescope, and customize my 811 to exactly the very best mount for me that I could hope for. I'm 70, and I have to pack out my mount and set it up, then pack it back in. So having it in sections that are easily moved and handled has given me a great mount.
No other I know of offers these abilities for the owner to make the mount work for you. And not you for the mount.
These guys are your best source for the right answers.
I spent a couple of months reading here and asking questions before I called up Tanya to get my mount.
Since I live ~20 miles away, I was able to go and pick up my GM811G at the factory and meet them in person.
And since my entire interest is DSO, Nebula specific, I got the HD tripod for extra stability.
There is nothing lacking in a Losmandy mount, nor the Gemini II control system.
--
SonnyE
(I suggest viewed in full screen)
