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Newt strengthening OTA around focuser ideas
With peter_4059's help, (I think) I'm on the home stretch of tightening up the stars in my images with the 10" Newtonian. Just the top right corner stars now are a bit elongated. I noticed to tube flexing a bit while playing with the focuser the other day and can't help but think it's the weight of camera that's making the OTA buckle a little and causing the sensor plane to tilt.
Plan is to stiffen up the OTA wall around the focuser by bolting some 3mm thick rolled aluminium plate inside. I've been searching around here for ideas but can't get a hit on previous threads. Maybe using the wrong search terms?
Anyone done something like this? What plate thickness? Dimensions? Photos?
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