Coma Corrector Photo & Visual For Netwonian Telescopes New from High Point is the 2" Coma Corrector for fast Newtonian Telescopes. Check out the features and specifications below: Equipped with a brass compression ring this coma corrector will not marr your eyepieces. Carefully designed the High Point Coma Corrector delivers a magnification factor of only 1.1x. Using the High Point Coma Corrector is easy. For visual use simply use the coma corrector as shown in the primary picture with both the nose piece and extension tube connected. For photographic use unscrew the extension tube from the optical nose piece, attach the (included) m48 - t2 ring to the optical nose piece and connect your DSLR camera. Note: you must have a t-ring specific to your camera in order to attach it to the included m48 - t2 ring. There you have it, a beautifully crafted Coma Corrector at an amazing price!