I bought a 1994 Coulter telescope from a fellow that came with a base made of double layered 3/4" particle board, and weighed well north of 50 lbs.
This is a Newtonian reflector scope, which means the 13.1" mirror in the bottom of it reflects the image back up to a secondary mirror, and then to the eyepiece.
The base is a Dobsonian style base. It is moved up/down (altitude) and right/left (azimuth) by hand. A man by the name of John Dobson. a gardener for a monastery in Calif invented the design.

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The old base. It shows the PO wasn't much of a woodworker, as it appears he used a drill and screwdriver to chip away wood where needed.
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I built the new base of 3/4" BB ply. The ground board is trimmed of unneeded material to leave places for 3 rubber feet, and the center axle.
The underside of the box has a laminate covering for teflon bearing material to ride on while turning it. The telescope itself has round bearings attached to the center of gravity. They ride on 4 teflon pads for altitude adjustment. The base is made to be disassembled for easy transportation.

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Sections of the sides have been cutout to remove weight.

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I added a tray to place eyepieces.
Now I need to figure out a way to reduce weight of the Sonotube structure.
It is so much easier to move, but still takes 2 people to handle the scope itself.

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