Quote:
Originally Posted by strongmanmike
Looking good Bert, looks like you really have that trio of engineering masterpieces singing in harmony now!
Mike
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Thanks Mike it has been a bit of a battle. It was very ambitious of me to even think all these components would actually work together. In retrospect it was my own lack of full understanding of what was happening that held me back. Perseverance sometimes does pay off.
Below are
some pictures of the Orion dovetails that I am using as stabilizing bars for the dovetail that holds the optical train. The weight of RH200 and image train was twisting the dovetail slightly differently which produced out of round stars over long exposures. I could actually measure this movement with my dial indicator. I had thought of getting Luke to make a far thicker dovetail and longer dovetail plate. Since this solution works I will not bother. The slots in the dovetails allow easy adjustment for balancing the mount.
When a dovetail plate that is 100mm wide and 12.5mm thick and held by a near full length dovetail plate is flexing like a torsion bar and causing differential movement between optic and camera we must finally be close to eliminating all flexure.
These NB images prove we are there?
Bert