An American vendor has started selling spare barrels to fit GSO diagonals (such as those sold by Bintel) so you can use your dielectric diagonal on either refractors or sct's http://www.agenaastro.com/Telescope-...inch-s/101.htm
Looks like it's best to buy a sct diagonal then get the spare refractor barrel. Nice to see the vendor responding to customer needs.
fantastic , about time
