I have a 10" F/4.8 "Research Grade" mirror for sale. It was made by Orion in the UK (orionoptics.co.uk). The substrate is Schott Suprax and it is 25mm thick so it cools very quickly. The mirror is four years old & is an excellent performer.
Selling because I recently rebuilt the scope with a longer focal length mirror. Selling for $380 shipped.
Last edited by PhilW; 26-10-2014 at 11:10 AM.
Reason: Sold