Esprit 120mm ED APO Triplet Refractor

120 mm apochromatic 3-element refractor 840 mm (f/7) Fully multi-coated Thread-on field flattener 3.0″ focuser w/micro focus 2″ Diagonal with dielectric coatings 9×50 RA erect-image finder scope Canon camera adapter Tube rings with CGE style dovetail bar Aluminum foam lined case 43mm image circle OTA Weight: 22lbs. OTA Length: 31.5″ Extended and 27.375″ Retracted Back focus: 75mm   Description Designed wtih the discerning astrophotographer in mind, Sky-Watcher USA’s top-of-the-line Esprit refractors deliver the kind of imaging performance one would expect from telescopes costing thousands of dollars more. With their three-element air spaced objective lens design, false color is completely eliminated, yielding exceptional contrast and sharpness. The included 2-element field corrector guarantees a flat field across the entire imaging plane. The Sky-Watcher exclusive Helinear Track focusing system provides a smooth, rock-solid focuser with zero image shift. All Sky-Watcher USA Esprit r