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Re the GSO, I have the RC08 and it does need to be tuned as out of the box they have issues. You probably will need to buy the collimation ring which the tubes don't come with but apparently the truss version does. Yes the focuser is sus. Whatver RC you buy you'll need a TAK Collimation Scope and adaptor , allow $300-400 for that as well. If GSO be prepared to fiddle with it but they are good when sorted out
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