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I have heard the spiel about heavy duty bars many times . Yes it's true for heavy setups but with a regular guide scope , for example, an Orion 80 mm that's quite light, and a short focal length main scope you should have no problems with a vixen bar. I run a skywatcher ED120 with an aluminium bar attached to the tube rings , ontop of which is a gso vixen dovetail clamp ( nice and cheap) into which the vixen rail of my Orion short tube guide scope attaches. This is mounted on an NEQ6 pro. I use an Orion starshoot autoguider and have made multiple exposures of up to 15 minutes over several hours with nice round stars in all my pictures. With my C9.25" I use an off axis guider . This is not due to flexure problems but the size of the opening in my observatory.However with its longer focal length I think I would stick to OAG any way
Hope this helps regards philip
Ps forgot to mention I replaced the adjustment screws in my guide scope rings with metal ones
Last edited by 5ash; 03-10-2013 at 06:46 PM.
Reason: Addition
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