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Hi Sara, the normal process for a permanent setup is to dig a large deep hole, a 1 meter cube is recommended. Fill it with concrete and rebo with a pier cast as part of it or attached with J bolts. The Observatory sits around the pier but isolated so no vibrations are transferred. Should weigh a couple of tonnes or so and it is not going to move.
That the ideal ... not always feasible or affordable.
So the two main principles derived are'
1. A mount for the scope(s) that is as rock steady as you can make it
2. Any floor or building to be totally disconnected from the mount on separate foundations.
My tin shed ob sits on a huge slab of concrete that was in place when we bought the house and the floor and shed are on 4 blocks, one at each corner well away from my large 10" concrete drainpipe standing on end 'pier' which is tie bolted to the slab. I might add we are on the side of a volcano and the concrete is stuck to the rock base so lucky.
If you are seriously going to use the horse float then chop a hole through the bottom and pour a concrete slab, cube or similar beneath and sit\attach your scope mount on that. The Float is just there to keep the rain off and protect the gear.
That is the raw description of what is required. In reality a lot of other things need to be taken into consideration, Sky view, trees blocking, nearby lights, power, networking maybe, lights, security, the list goes on.
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