Quote:
Originally Posted by RobF
I think Steve has said what I was thinking. Many of us with EQ6s sitting on a pier probably have a hell of a lot more trouble with backlash and PE than movement from the pier. I suspect even a stable tripod has minimal influence on the final result when you still have mount issues to guide out.
For those with permanent observatories and PME/AP mounts, MIGHT be worth considering, but really, if you rpier is isolated from floor vibrations do you really think vibration from the mount motors is going to resonate that badly?  |
If I touch any part of my optic train even very gently while watching the guiding in MaximDL the corrections become larger and oscillate. Wind has the same effect. It is only about a few seconds of arc.
Drive motors will start bad oscillations when there is any tiny resonance in the system between the motor and system.
Remember any unwanted vibrations/oscillations ADD to the seeing and inherent mount drive variation.
The worst case of wobbles I had one night was when a possum decided to jump onto the telescope from the observatory wall. It was a small ringtail possum. I had to go out and coax it to get back in its tree. When the RoR roof is open possums use the exposed tops of the observatory walls as highways.
Bert