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Originally Posted by asimov
Ooops! Nothing worse than a blown diode @ 4am! Take my advise & knock up a quick radial arm for just such occasions! Not as good as an electric focuser of course! But better than trying to focus using the knobs.
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i think i will as a backup. i am mr optimistic that the motors for the dob will work straight away and i can take as long as i like to focus, but if not, at 480x, the slightest touch buggers the fly by! can the radial arm be turned without putting the tube into shudders???