Edmund's mount questions...
Posted 18 November 2006 - 06:39 PM
It has a small RA tracking motor and worm gear drive, but I cannot figure out how to use it properly. It appears to clutch in and out with a small removable cylinder lock. However, it appears fixed to the shaft and not adjustable except to clutch it in and out at a fixed position. Is there something I have to loosen to be able to spin it on the shaft to set it?
Posted 20 November 2006 - 07:33 AM
Posted 24 November 2006 - 01:43 PM
Agree - post a picture with closeups. A word is always less than a millipicture.
Posted 26 November 2006 - 06:33 PM
Posted 26 November 2006 - 11:14 PM
My RA drive has a small lever that pivots between pins on the drive and allows coarse manual east-west adjustment. Might have looked good on paper to some non-practical ME weenie at Edmund at one time, but it's basically a stupid idea, terribly machined, and a constant source of RA slop. The little drive tracks at the right rate but is just too small for a mount that size. I shimmed the slop out of the lever and was able to do some nice astrophotography with it. But it just can't handle any sizable telescope load unless the balance is perfect and there's no wind.
As far as the mount weight capacity, you've got a nice, massive equatorial mount that can easily carry a 10" scope. But your clock drive will likely be the limiting factor on weight capacity, not mount structure. You might want to talk to Byers or Mathis for a new RA drive that will fit the shaft.
Questions answered, or at least discussed?
Anytime you want to dump that mount, think of me, I love those old Edmund mounts
Posted 27 November 2006 - 09:06 AM
I can't say I have ever seen any other mounts like it before. I have seen lots of fork mounts and smaller Edmund GEMS, but never any this big.