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John , the cone error is easily checked and adjusted out. Your HEQ5 would have come with a Synscan instruction manual. The cone error
adjustment is fully explained in index 1 of the manual; all you need is a couple of basic tools and a reticle eyepiece.
It can be done anywhere, and during the day is fine.
raymo
Last edited by raymo; 26-09-2014 at 08:28 PM.
Reason: more text.
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