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Originally Posted by glend
Good to see more competition in the dob sector. I would think they need to put abit more info into the specs, because the resolution is not great for a 12". They claim 0.43 verse 0.38 for a GSO 12".
Some detail on the mirror/optics would be helpful.
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I wouldn't worry about angular resolution difference between 12" mirrors from manufacturers. Atmospheric conditions would limit actual resolution long before you reach the theoretical resolution of a 12"+ scope.
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BTW, both Lightbridge and GSO are releasing new dobs (18" and 20" repectively) later this year. It will be interesting to see what sort of design they can achieve, certainly not a solid tube at that size.
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Do you mean Meade and GSO? They both use the same optics. Sky watcher is bringing an 18" out as well.
What I really like is the dual fans specifically located to pull the warm air away from the mirror's boundary layer. Where a rear fan will cool a mirror without baffling around the front of the mirror the boundary layer is largely undisturbed.
I actually did this with my 12". I added a ring baffle just above the primary mirror that pushes air drawn into the my OTA from the rear of the mirror with a 140mm fan over the mirror disturbing the boundary layer. In effect it makes my 12" usable immediately after setup and collimation. I've been able this summer to take my scope from inside my house or garage. Set it up outside, collimate and be able to immediately pick out E and F star in the Trapezium in Orion at just 110x magnification. I was even able to split Sirius at 150x with little effort after a couple min after setup. I tend to just leave the fan running all night. My fan is not connected/touching my mirror cell. So there is no added vibrations. Even at high power.
Concepts like this on what will probably be a mass produced telescope shows just how much thought went into its design. How exciting will it be if they release a 16"+?
Can't wait. Exciting times we live in.