Orion CT80 Compact Refractor: The Achilles’ heel of rich-field achromatic refractors is chromatic aberration, but when you goal is scooping up ultra-wide, low-magnification views of the Milky Way, who cares about chroma. Witness Orion’s versatile new f/5 CT80 80-mm Compact Refractor ($109.00US) which is designed to excel at wide-field observations […]