I have a DS-16 on a equitorial mount with dual axis drive corrector and JMI minimax digital setting circles. The scope is in good condition. The RA setting circle has become cracked but this is easily replaced. I never replaced it because I always used the digital setting circles. This is a very big light bucket of a scope. I'll happily entertain any offers or trades on this scope. Im especially interested in trading this scope for a GP/DX mount with a Skysensor 2K unit installed. I'm happy with this scope but I am moving and am losing my permanment observatory that I once had. Please feel free to email me with any questions that you might have.