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It isn't quite that simple Paul. Most Newts do not have enough back focus
to allow attaching a camera for prime focus photography. As far as I am aware, At least some GSO Newts fall into this category, whereas all
Skywatcher/ Saxon Newts have sufficient back focus. If Josh decides he
would like to take some pics, this would be a vital point.
Sorry Colin, it's just not true that collapsible dobs don't hold collimation. Truss dobs usually need tweaking after assembly, but the massive
system that Synta use on their Skywatcher/ Saxon collapsibles ensure
that they hold collimation very well indeed. My 8" solid tube newt
sitting on my HEQ5 mount needs collimating FAR more frequently than my 10" collapsible dob does.
A friend of mine has a 10" Lightbridge, and he and I have not encountered tube current problems with our Dobs.
raymo
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