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I'd go with the scrap metal, or steel and tube type suppliers.
I did. Mine is only 600mm tall, and is about 150mm diameter, but there is no reason it couldn't be fatter/taller. Mine is 5mm thick in the wall, but again there are many differing dimensions.
I poured a concrete "plug" about a metre deep in the ground, finishing flush, or just under the surface, and slipped 4 galvanised bolts into the drying concrete. When set it meant that the four bolts, well the thread ends anyway, were sticking up.
On the bottom of the pipe I welded a flat plate about 200mm square, and drilled four locating holes in the corners, to coincide with the concrete held bolts. This allows me to remove or replace the pipe. On the top I cut three slots to accomodate the G-11, but the Meade will be easier.
All you need is a flat plate, either horizontal, or at the appropriate angle to allow polar aligment, with shimming as required. OR and elaborate wedge if that is what you want.
I finished mine in black paint, and then made a power board for the front, for the digital drive box to sit in, and also with about 5 RCA plugs as well, for dew heaters, and all manner of requirements.
The whole power thing is powered by an old 12 volt PC power supply, regulated and easy to buy.
If required I can shoot a picture or two, but you get the idea. E mail me off group if you wish.
Gary
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