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Home > Reviews > Mounts > Other > TeleVue X-Y Adjustable Accessory Mount

TeleVue X-Y Adjustable Accessory Mount
By Wayne Gay - 1/23/2005

Having received a TeleVue TV-60 for Christmas, I was on the hunt for a way to mount it piggyback on my 8" SCT. I also wanted the ability to adjust it separately from the main telescope. Some kind soul on Astromart pointed me to the X-Y adjustable mount. It looked like it might work for my uses. So I went to Anacortes and purchased one.

Attached to the Losmandy universal adapter.
At first look, I wasn’t impressed. The adjusters were fairly crude. A small knob on each side of the adjuster for RA that are placed into grooves on the telescope dovetail. The Dec adjuster is a small knob on top, that requires loosening of a lockdown knob to adjust.
The lockdown knob is really hard to tighten sufficiently, since it has small notches that slip in my fingers. Once I figured out how to get fairly decent adjustments on the RA and Dec, which takes a bit of trial and error, it appeared it would work for me. You see I want the ability to mount a camera on the TV-60 for wide field CCD work.

Now it was time to mount it onto my 8” SCT. I removed the standard finder bracket and replaced it with the TeleVue finder bracket. Fit perfectly. Then I mounted the X-Y mount onto the finder bracket and tightened the holding knob. I then mounted the TV-60 to the mount. Everything looked good, until I attached the camera to the back of the TV-60. The mount shifted, down in the back. I appraised the situation and found that the finder bracket was the culprit. No matter how tight I tightened the holding knob, nothing helped. Heck, my standard finder didn’t do that. I re-attached it to double check, and pushed it all around and it stayed put. I could move my main telescope with out it budging at all.

All of the sudden, I have a worthless mount for my TV-60. Actually the only part that was worthless was the finder bracket assembly. So I looked around and decided I could mount the X-Y mount to a Losmandy dovetail mount using the universal mount. This did require some modification to the universal mount and the X-Y mount. On the universal mount I drilled and tapped 2ea ¼ inch holes, matched to the holes on the bottom of the X-Y mount, and I had to enlarge the 2 holes on the bottom of the X-Y mount to allow the stainless bolts to slip through for mounting.

New holes in universal plate, center hole is for the lockdown knob.
This actually made things work better than the finder bracket ever could have, in that I had a rigid mount to my main telescope, I can adjust the mount separately from the main telescope, as well as giving me the ability to slide the TV-60 back and forth to help balance the whole system.

Over all, I would say the mount is a usable mount, however, I would suggest either using a dovetail similar to what I am doing or get a piggyback camera mount and attaching the TV-60 that way, rather than going with the finder bracket mount this was designed for.

Wayne

Click here for more about this product. -Ed.

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