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.
When I popped this baby in to my scope, it was severely miscollimated. Stars looked like comets even at low power. I could tell by the defocused image that it could be a good diagonal if aligned. After some tinkering, the prism was aligned and it gave very nice images of Izar and Saturn in my 100ED. I needed a diagonal in a bad way, so returning wasn't an option, but the story has a happy ending. It's a nice diagonal if it comes aligned.
The Orion ShortTube 80 is perfect being used as a guide scope with a CCD autoguider. It is a compact scope with optics that deliver bright wide-field images. This product is just the tube assembly with no accessories.
No, this is not the perfect 80mm. But, it deserves 5 stars for the money. This little guy is light, compact and a good performer. I use this scope for imaging (not guiding!), white light solar viewing, daytime viewing and as a quick look scope at night.It is a great value for any astronomer on a budget.