If you get a chance to check out Dave47Tuc's scope, it's a very good example of how a low-cost GSO dob can be turned into a well oiled machine.
The best zero cost mod you can do (collimation), followed by a few low cost mods including flocking and fixing the alt/az motion, followed by the best DSC computer (argo navis) and it's such a joy to use.
Well done on making the first step (and the first post!) and getting to an observnig night before making the first purchase.
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