Quote:Of much more importance to me is it looks like the Royce would hold collimation better as the mirror is bolted onto the cell.
Quote:To get an 11" Royce conical, one must pay the price for the 12.5, as noted above, which is $1700, vs, Zambuto 12.5 at $1960. HOWEVER, and it's a really big "however", the 10" Royce conical is $850, compared to 10" Zambuto @ $1400. So I just ordered a Teeter STS11 (solid tube 11" Dob) with a 10" f/5 Royce conical mirror. A slightly slower system than the 11" f/4.5, and the extra space around the mirror should provide better temperature equilibrium. Another bonus, the OTA will be little lighter weight.Best of all, the 10" Royce mirror is only a $200 bump up in Teeter's price structure for the "regular" STS11.
Rob ... my avatar pic is me ... on a good day! ********************** SV-105T Canon 12x36 IS binos Pan 22 Nag 12T2 Delos 8 XCEL-LX 7mm Nag 5T6 Previous Scopes: .... many apos and a few dobs!
Quote:Is Zambuto still doing thin quartz mirrors?
Tak FC100 Tak FS152 10" f/6 Zambuto dob 24" f/3.3 Starstructure
Jeff Morgan - Wile E. Coyote School of Telescope Making
Quote:If the mirror is epoxied to a support, or has a central bolt oxide in place, I would expect this must be removed before the mirror can be recoated - otherwise the epoxy will outgas in the vacuum chamber.Thoughts ?
Quote:Quote:Of much more importance to me is it looks like the Royce would hold collimation better as the mirror is bolted onto the cell.Is there a problem with collimation on the Zambuto STS's?Also, does the bolted-on Royce use the new mirror cell Rob has been raving about?
Joseph Cannavo: Teeter in Rocky Mountains!My Scopes/Stuff:16" F5 Teeter/ZambutoTom Osypowski equatorial platform10" F5 LightbridgeMid 70's RV-6Orion 100mm EDMy ATMing:Low Profile Front Collimating Dob/Cell for 16" Conical MirrorFront Collimating Dob/Cell for 16" Standard MirrorDob Driver with novel azimuth friction clutch, and axial (rotating) electrical connection.Red Oak Observing PlatformRed Oak Combination Observing Chair (Post Pending!)