Plus I'd say 4 - 6 hours is long duration, anything over 20 minutes is probably getting quiet complex. Auto-guiding will give you alot more precision of course, but are you saying add auto-guiding and a EQ-6 or CG5 are as good as say a CGE or G-11 also with auto-guiding? The extra $3,500 between a basic mount and a higher quality one should be discernible, isn't it?
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