skywatcher 12 inch dob ????

[Alchemy]

just a couple quick questions i have the GSO 12 inch, and have had a few issues to work out, almost there hopefully, i might give up on it if i havent nailed it this time. SOOOO the GSO has a flat peice rolled into a tube with a join, is the skywatcher the same or is it one seamless tube? would anyone say it is more rigid than the GSO ? lastly what is the circumference of the tube itself? (just getting an idea if the rings would be interchangable).


just in case i wasnt obvious im only interested in the full tube version not one of the truss thingys


thanks for your replys in advance

clive.