The Santilli telscopes are a set of two Galileo type telescopes with simliar settings except that one of the scopes has the normal convex focal lens and the Santilli scope has concave focal lens. See here for info :- http://thunder-energies.com/index.php/ct-menu-item-18/11-articles/17-article-8 The reason for two telescopes is because a normal Galileo scope with convex focal lens will see matter galaxy's multiplied by the amount of focal length and diameter of the lens. The concave scope cannot see normal light, but it can see antimatter galaxy's. The concave lens scope (Santilli) will be opposite in magnification to the convex (normal) scope. I have built a set of 50mm x 300mm focal length tubes. And using some bit and pieces from other scopes I own, I have set up adaptors for my Sony a7s camera which has the high enough iso to record long exposure photo's through the concave lens tube. I've cut out half of the tubes so I can move the lens to focus the camera on the normal convex scope and then tranfer (in a crude way) to the Santilli concave scope. I then use a crude Pringle chips container to cover the opening to conseal the darkness. As this is an experiment for me, I don't intend on building a better model unless I see some results. I don't think many of these sets of scopes have been sold. Only one of the scopes is usefull even if the other other doesn't yield results. I think they are over priced considering you need at least one Sony a7s or a higher iso good dark light camera to operate it. Amazon.com has the Santilli scopes for sale, but not for import to Australia. This is why I've built my own model. The Santilli telescope has a universal nation/world wide copyright on it. So I'll call mine "50mm convex/concave antimatter tubes." or 50mm CCAT for short. :) If I capture anything, I will increase the size and build a better system. The pictures through the convex or normal scope aren't fantastic, but it's the concave scope I'm hoping to capture something on. The reason for long 20 to 30 second exposures instead of video is because an exposure with keep the movement of the antimatter as a trail on the photo. A video won't. This is what I'm hoping to see, or something similar to. :o) Here are some photo's of the build. So far I've been unable to capture anything as the skies have been clouded or I've been using the camera for other uses. Or I haven't captured anything at all. Only dark blurry pics. But I'll update as I go.