Quote:
Originally Posted by Paddy
I'm very grateful for all of these responses and the link to the binewt site. Very interesting and has me imagining! I wonder how to site the focuser tubes on a binewt so that they can be practically used. The photos on Dave's binewt site seem to indicate that the eps are under the scope. This would be fine for higher objects, but with a shorter focal length scope say 1500 mm it would make viewing lower objects quite difficult. Are there other arrangements? Has anyone used one of these and if so, how was the accessibility of the eps?
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JMI does a strange looking contraction (big newtonian based binonewts), check out their website.
http://images.netshops.com/mgen/digi...pg&h=300&w=300
http://www.telescopes.com/binoculars...rtelescope.cfm
I expect unless you use fancy relay lenses or use much bigger secondarys than usual , that vigetting and back focus with binonewts would be a big issue.
Those are star diagonals (the tertiaries) , if at zenith .... just rotate them to a comfy angle.
They have
Eyepiece Spacing: Variable from 2" to 3.25" .... surely they could have made the secondary cage rotateable at that price !!!???!!!! peoples eye spacing is constant last time I looked in the mirror.