Telescope Tube Mount Brackets
Here are some ideas for the telescope makers to mount their round tube to a flat mount plate
using various methods.
1. Flying Wings made from bending sheet metal into a 'U' shape so that your tube rests on the
wing edges and the bottom can be bolted to your mount. Use pipe straps to secure around the OD of the tube. 
2. Telescope Tube support methods. Another method is to purchase a piece of "U" Channel in aluminum
that is about 70% of the tube width and deep enough that your tube will not touch the bottom plate. Put pipe straps around
the OD to hold in place. 