Yes I have ED80 scope.. I was thinking of 900mm or 1200mm would be nice.. but I guess a barlow would help double that??? I am very happy with the ED80, as sick of trying to align my tracker at night.. so if the goto will help me with less time of setting up the polar alignment.. as I said.. without a computer... but something mobile or wireless that I can prog it to focus on one thing and track it!
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