Posted 01 June 2009 - 09:44 PM
I recently purchased one of these mounts (same as the Orion SkyView AZ I believe) to use with my MN56. The Mak Newt is pretty heavy for a 5" scope,and I find that balance does shift quite a bit depending on the altitude I am pointing to. Also,the nudging is not as smooth as I would like at powers above 100X, but that could just be me getting used to the thing.
Anybody else use this mount and have the same issues? Am I expecting too much? I like the light weight of unit with tripod and it is solidly built, but I understand some early Orion models may have had clutch and balance problems.
Any and all comments appreciated!
Posted 02 June 2009 - 07:04 AM
Posted 02 June 2009 - 08:34 AM
Thanks for the reply.
Shifting the axis of the tube will help for a particular orientation, but moving in altitude will also make the scope top heavy or bottom heavy. If I balance with the tube horizontal, anything above a 40 degree or so orienation will make the tube bottom heavy. A balance at 45 degrees make the tube top heavy at less that 20 degrees or so, bottom heavy above 65. I can tighten down moderately to keep balance, but then I find the movements a bit too stiff. Last night I observed the moon at magnifications up to 250x and found the mount "workable". Maybe I'm just too used to slow motion controls and need more practice.
I appreciate your suggestion about a counterweight system. I have a sliding unit on my CPC925 that I find is pretty effective switching back and forth between my Denks and mono viewing.
Posted 03 June 2009 - 10:26 AM
Posted 03 June 2009 - 11:19 AM
Posted 03 June 2009 - 01:08 PM
I will try adding weights opposite the focuser and re-balancing as per your suggestion.
Posted 03 June 2009 - 01:47 PM
Posted 03 June 2009 - 01:54 PM
Posted 06 June 2009 - 03:26 PM
I had my dealer checkout the mount motions and he came to the conclusion that the movements were stiff and not as smooth as they should have been (with or without OTA). He replaced the unit right away with another from stock, and the new one is MUCH better. Last night there were no problems hand tracking a balanced MN56 at powers up 240x.
Next clear night I'll atttach my Orion ED80 and try observing in dual telescope mode. Only thing left to buy right now is a pier extension.
Posted 06 June 2009 - 03:37 PM
I bought the skyview pro 16" extension and although its a bit heavy- I really enjoy it!