Neufday 0.96" 24.3MM Refractive Telescope 45 Degree Zenith Mirror Erect Prism

hi this is Graham from Jenham's Astro. Now and again I receive a question about how to make the inverted image from an astronomical telescope flip to be the right way up, particularly people want to know about this when they want to use an astro scope for terrestrial viewing and they're trying to figure out whether the image will be right way up left to right etc etc so this video is designed to show the effects of things like star diagonals and erecting prisms on the image that you'll see either looking through the eyepiece or if you have a camera over the eyepiece, for example digi-scoping. To do this I've constructed this cunning target which I'm going to pin to a fence and then we can see the effects of each optical configuration okay. So the first setup is this so we've just got the eyepiece and the telescope there is nothing in between it no other device and we're going to look at