J Jon B New member Oct 17, 2010 #1 4 inch apo refractor versus 13.1 inch reflector...which is better for image quality? Are the blue box Coulter optics bad? Are the Orion 100ed Apo optics overrated? Which is better and why?
4 inch apo refractor versus 13.1 inch reflector...which is better for image quality? Are the blue box Coulter optics bad? Are the Orion 100ed Apo optics overrated? Which is better and why?
