Quote:
Originally Posted by leinad
On the topic of Crayford focusers.. the skywatcher dob focuser has two threaded holes, but only a screw in one of them closer to the eyepiece.
Anyone know why this is so, and is the second threaded hole of any use?
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I'd say the knurled screw has probably fallen out.....
I'd have thought that it should have two.... but the photo here has only one. They say "tension control knob plus focus lock". Where the heck is the lock?