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I think the important thing here is the budget of ~$2000.
I use an EQ6 with the cheap Q-guider with a guide scope.
I image with an 1800mm fl scope and have no problem achieving very good tracking. According to the data from guidemaster, with guideing I can keep the scope within ~1-3 arcsec in both directions depending on seeing and wind etc.
The less guideing that is done the better but good results can be achieved with this combination that cost about ~$2000 total.
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