Superb 180mm optics with one quality 2" eyepiece, 8x50 finder and 2" diagonal provide excellent results for discerning observers, compact large aperture optical tube ready to attach to standard mounts such as the EQ5 and EQ6.
Apochromatic Refractors, due to their unobstructed, text-book like diffraction patterns, produce the sharpest, highest quality optical imaging available, bar-none, aperture for aperture, of any telescope optical system. The high-end Evostar-150ED Apo doublet features an undisclosed combination of one Extra-Low Dispersion (ED) glass element and a matched crown element.