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Hi. Can you tell us what sort of telescope you have? Is it a reflector (with a mirror in the tube) or a refractor (with glass elements in the front)? If your telescope is a refractor, are you using a diagonal mirror in front of the eye piece?
What sort of eye pieces do you have, they should have something written on the outside of them, particularly the focal length in mm?
Do you have a finder scope attached to the telescope ( a small telescope you use to aim the big one)?
Start with those questions. It is probably something easy to fix.
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