All the current telescopes existing on Earth or in space can not detect antimatter-light because they are all based on convex lenses. Dr Santilli has created a telescope with a concave lens. Similarly, we will never see images of antimatter-light with our naked eyes because our cornea is convex, and as such, it disperses images of antimatter-light all over our retina. The only way to capture images of antimatter-light is via images on a digital or film camera. Concave Lens telescopes, called Santilli telescopes, have been tested and produced to detect antimatter galaxies, antimatter cosmic rays and antimatter asteroids.
Since matter and antimatter annihilate at contact into light, as a condition for its existence at the classical macroscopic level, antimatter must have all characteristics opposite to those of matter. For instance, matter-light has a positive index of refraction while, as a condition for its existence, antimatter-light must have a negative index of refraction (Figure 1).
Consequently, the focusing of images of matter-light require convex lenses as occurring in the Galileo telescopes, while the focusing of images of antimatter-light requires concave lenses, as occurring in Santilli telescopes (First diagram) Ref & Sauce: http://thunder-energies.com/index.php/ct-menu-item-18/11-articles/17-article-8 Click source link to see how the telescope aids in the detection of antimatter galaxies, detection of antimatter asteroids and detection of antimatter cosmic rays