Quote:
Originally Posted by Merlin66
Ahhhh
You may have found the problem/ issue!
Those two screws you show in photo#4 should NOT be there!!
It looks like the screws, used to attach a finder etc are toooooo long and probably interfere with the mirror travel.
They should be unscrewed to at least stop any interference with the mirror.
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Quote:
Originally Posted by casstony
Was the tube originally in a fork? Looks like a deforked model and the screws used to fill the holes are too long.
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Thanks. Those screws are definitely in the position where the forks attach to the tube. They have always been there since I bought the scope new in 2010!! The focuser had always been easier to turn in some places and harder in others. I always thought it was just a focuser thing. The scope has always been a imaging scope and I used a meade zero shift focuser. No need to touch the focuser knob once set.
I removed the screws and guess what, the focuser is now nice and smooth.
I can now also see a noticeable movement in the mirror when the focuser is turned fully in and out.
I can now get to focus. This has solved my original problem.
However, I now have a collimation problem. I am going to start a new thread for this.
Thanks to everyone who offered help.
Brendan