Sky-Watcher Esprit 150 ED APO Refractor OTA

Sky-Watcher Esprit 80ED, 100ED, 120ED and 150ED Super APO refractors have a doublet field flattener to get a flat field and minimize aberration and distortion. Their wide 48mm opener ensures a larger and clearer aperture and also extremely minimized halation. Connect the triplet and doublet field flattener with a high precision thin thread to keep the optical axis perpendicular to the image. Features: Premium optical materials Short focal length and full frame corrected focal plane Excellent field flatness Precision linear power focuser is standard Metallic high-transmission lens coatings Light-baffled optical systems Telescope tube attachment hardware Full-frame corrected focal plane Zero detectable colour fringing even on bright objects Knife-edge baffled optical system The kit includes: Optical tube 8x50 erect-image finder scope with tube rings and mount 2" (50.8mm) diagonal 2-element thread-on field flattener Field flattener extender tube for DSLR camera 28mm eyepiece, 2" Thread-on field flattener adaptor User manual and warranty