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skyquest-telescopes@y...
Apr 1, 2007 4:39 pm
36407
skyquest-telescopes: Welcome and Introduction Page Revised October 2003 1. Introduction and Background The skyquest-telescopes forum was founded in...
skyquest-telescopes@y...
Apr 1, 2007 4:39 pm
36408
Good evening all, I was wondering if anyone out there had a tried and true conversion method of the Orion XT12i from a factory tube Dob, to a truss Dob. Of...
After viewing Andy's fine video,many times, I decided to try collimation again on my XT10. My secondary mirror was loosened from going over my door threshold...
... Haven't reviewed the video for a while, but - nothing. As long as the edge shows evenly all around so that you see that the secondary is centered. ... Gene...
... conversion method of the Orion XT12i from a factory tube Dob, to a truss Dob. Of course the reason is to make it more portable. I enjoy my scope, but...
Bill, Thank you very much for taking time for your well advised sources for my question. I will check them out. Take care, Owen ... conversion method of the...
... I had posted yet another suggestion in case Jack's fix didn't work out for you. I deleted it because, on further thought, I wasn't sure just where your ...
I wasn't sure just where your ... Gene,I don't get email replies. The centerscrew that holds the secondary mirror tight. It seems to loosen easily. That was my...
... Yes. The others are for tilt. My original (now deleted) reply to you was - if you have at least 1/4" of thread showing on the front of the centerbolt -...
... I did'nt see your original reply,sorry. That may account for some of my confusion. On my XT10 it's a four vane spider and the centerbolt is countersunk...
... Bill, Keep in mind that tension on the secondary adjustment screws equals tension on the center screw, they work in opposition. Very often on the GS made...
My xt8's primary mirror doesn't seem to be holding collimation well once it is achieved. Moving the scope outdoors from indoors or vice versa seems to result...
... Jack's answer about tightening the springs is very much on target. As to the tighness of the clips: they should not touch the surface of the mirror AT...
From: "Gene Baraff" <g2baraff@...> ... Gene is right on that score. It's really the rim of the mirror cell that holds the primary mirror in place and...
Had the same problem with my XT12. There wasn't enough tension on the springs to hold the mirror. I tightened all three of them down and loosened to collimate....
Hi. I recently purchased a new 2-speed Crayford focuser for my XT10. Like the original focuser base on the scope, it too is collimatable. Guy at Orion told me...
The secret is to locate the point exactly opposite the center of the focuser on the other side of the tube and drill a tiny pin-hole through the tube. Then...
Question for those that have already done this: The old focuser had an extra plastic "gasket/shim/spacer" device between it and the tube. I did NOT put this...
I would agree with Nils that "perfectly square" is not required (in theory) for axial collimation convergence and good scope visual performance, but that being...
Jack, I think the ScopeStuff guy and Nils are talking apples and oranges. ScopeStuff was talking about squaring it to the mechanical axis of the tube. The...
... It might make a slight difference if you use certain EP's like the 30mm GSO or 27mm Panoptic - they tend to need an extra "lift" in the focuser to reach...
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