for the 8" Dob. More "bang" for your buck. Much more stable that the tripod your's came with. If you can get your money back go for it. There is nothing wrong with the scope you bought but it will be very limiting in its ability and the mount it is on will drive you nuts. The other issue with that scope is that it uses .925" eyepieces and the standard these days are 1.25" and 2", so you will be hard pressed to find more eyepieces to fit it, let alone good quality eyepieces. You can get a .925" - 1.25" adapter but IMO its not really worth it. In fact if you are limited by funds consider getting a good pair of binoculars and a sturdy camera tripod and binocular adapter. Or just the binoculars. A reasonably good pair of 10X50 (10 times magnification and 50mm objective lenses) will probably cost around the same amount as you have spent. And you will get much more enjoyment out of them than with your current scope.