Click here if you are having trouble logging into the forums
Privacy Policy |
Please read our Terms
of Service | Signup and
Troubleshooting FAQ | Problems? PM a Red or a Green Gu.... uh, User
Dragonwatcher
super member
Reged: 01/21/08
Posts: 199
Loc: Kirkland, WA
|
|
This is a bit embarrassing, but I can't figure out how to mount my WO Megrez110ED refractor to my UA Unistar Deluxe mount and tripod. I got a set of 114mm rings. The rings have five holes at each end and two screws for attaching.
My Unistar mount accepts either of my two DUP plates that fit quite nicely in the jaws. I have a long plate and a short one, both with many holes. I assumed the holes on my rings would match up with the holes in the plates, but no luck. I can't get any two holes matched up. The holes are all too big for the screws except for ONE hole near the ends of each plate, which doesn't seem reasonable to use. I would think I would need to attach the rings with 2 screws for stability and it would seem odd to attach with one screw at the far end of a plate.
Am I missing the obvious? The plates are DUP plates and were recommended for the Unistar. Do I need some other kind of plates for rings? I am just puzzled and frustrated that something that I would expect to be easy - attaching my telescope to a mount - is difficult.
Anyone familiar with a Unistar mount and ring attachment - I would GREATLY appreciate your advice! 
--------------------
Jackie
Pentax 80ED for ship watching
SV80L for grabNgo
Tak FS102 for longer sessions
Astro-Tech Voyager alt-az
TV 85
|
coopman
Pooh-Bah
Reged: 04/23/06
Posts: 1209
Loc: South Louisiana
|
|
You might want to give Larry at UA a call. I wish that I could help you. I've got 2 UA mounts, but both of them use a 2" x 8" plate with a slot down the middle of it. I pass a bolt thru the slot & into the bottom of each ring, tighten them down and the OTA is then attached & ready to use.
--------------------
Regards,
Clay
"The heavens declare the glory of God; the skies proclaim the work of his hands." Psalms 19:1
|
Dragonwatcher
super member
Reged: 01/21/08
Posts: 199
Loc: Kirkland, WA
|
|
I have sent an email to Larry at UA as they are closed now. I have clear skies today - which is not all that common here in the NW.
--------------------
Jackie
Pentax 80ED for ship watching
SV80L for grabNgo
Tak FS102 for longer sessions
Astro-Tech Voyager alt-az
TV 85
|
spencerj
professor emeritus
Reged: 11/17/04
Posts: 577
Loc: Derry, NH
|
|
I am having a difficult time picturing the holes in the rings and the plate. It doesn't sound like the plate matches the rings very well. But as long as it feels solid it sounds like you could use one screw on a ring on each end of the plate.
Maybe a couple of photos would help.
--------------------
--Jason
"I am the victim of a series of accidents, as are we all." --Kurt Vonnegut Jr.
Intes-Micro MN66 with Moonlight CR1 focuser
TeleVue 102
PST
Unistar Deluxe with TeleVue Sky Tour
CG-5 ASGT (quieted and tuned-up by Trapezium Telescopes & Services)
10" Orion Dob
WO 66 SD (stays in my truck for spontaneous observing sessions)
15x70 Oberwerk Binos
|
katodog
Supreme Grandmaster
Reged: 03/31/06
Posts: 2301
Loc: Carol Stream, Illinois
|
|
You can easily use one bolt per ring, it doesn't matter. The stability comes from the ring and plate being completely flat to one another. One bolt is more than enough. My Megrez rings are bolted to a dovetail plate with only one bolt per ring, and that's more than enough.
Think about this: A Meade AR6 OTA cradle is held on to the dovetail plate by one bolt in each end. The four adjustment bolts only go against the flat, and the whole cradle is raised anywhere from an 1/8" to a 1/4" above the dovetail plate. That ota is 27 pounds, and so far I haven't heard of any scopes falling off yet.
If you are worried about stability, drill holes into a plate that match the holes in the rings. That way you won't have any worries.
--------------------
The only stupid question is the one that goes unasked
12" Starhopper / Coronado PST
Stellarvue 20x85mm Binocular / LXD75 Mount
Sigma APO 150-500mm F5-6.3 DG OS HSM
Sigma 18-200mm f3.5-6.3 DC OS
Canon EF 70-300mm f/4.5-5.6 DO IS USM
|
|
|
Previous
Index
Next
Threaded
Edit
Reply
Quote
