The SkyQuest XT10 classic reflector has features for both beginners and advanced users. It has a huge aperture, the stable base glides easily to give you total pointing control, and this package includes a Barlow and Beginning Stargazer's Toolkit.
For upright, non-reversed images you need a correct-image diagonal. The Orion 45-deg Correct-Image Prism Diagonal is perfect for terrestrial viewing with a refractor or Cassegrain telescope. Fully multi-coated prisms give you superior image fidelity.
The 1.25" Orion Prism Star Diagonal produces right-side-up images that are reversed left to right. The fully coated prisms provide superior image fidelity. It is not recommended for use with reflector telescopes or for terrestrial observing.