Quote:
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Originally Posted by Starkler
Just to put things into perspective, how much wobble would you expect if you spent the same money on an achro refractor+cheap eq head+aluminium tripod ?
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My first scope was a 4.5" (114mm) f7.9 reflector + EQ + tripod from Dork Smith (had to change the spelling because D got filtered!!). I paid $200 for it; but you'll see the same sort of scope for twice that in camera shops, which is what I paid for the Dob. (You can check out the DSE marvel
here.)
In light wind, the scope was near unusable at 100x because of the constant vibration, and completely unusable at 150x. In nil wind, 150x was doable but the optics was breaking down.
It is virtually uncollimatable because the spider is fixed and the diagonal always ends up off centre. Terrible contrast because the central obstruction is huge and spider vanes are thick. No Cassini division in that nasty piece of work.
I use the mount now with an old 60mm refractor I got off ebay for $25. That little scope outperforms the 114mm Newt by a long shot! The mount still wobbles but it's usable with the featherweight scope.
Hey, ... maybe I should write a review for the DSE Newt, to warn people off buying such rubbish??
Ah, and with the Dob the vibration is just annoying at 300x and not really a problem at 150x.
Dobbie Wobble :)
unheard of 
).
