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Nicely done for $75.
I'm familiar with this scope. Be careful not to over tighten ANY of the threads, even if the logical thing would be to have them firm. "National Geographic" isn't a garrantee of quality. This scope is a mass produced demon I'm sorry to say. The mount will not last long as the scope is really too big for it, and the single counter weight isn't enough to balance the OTA. You would be better off making a dob mount for the OTA.
I could do a song and dance over your purchase, but I'd be not truthful.
The optics may be ok. Only a night under the stars will tell. Take it slow with this scope. Don't rush the mount.
Also, at f/4, coma will be very obvious at low power. This will look like the stars around the edge of the field of view have little comet tails that radiate out from the centre. This isn't a defect! It's a phenomenon that happens when coupling a fast Newtonian with low power eyepieces.
I hope you've scored a ripper scope. I really do. It will make it an outstanding buy.
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