66 Degree Ultra Wide Angle Eyepiece: Provide impressive optics with an enormously wide 66 degree apparent field of view (AFOV); Perfect for clearly observing planets or deep sky objects and offering expansive views of moon star clusters and Milky Way
Comfortable Eye Relief & Adjustable Eyecup: Generous 14.8mm eye relief with 6mm focal length allows comfortable viewing distance during astronomical; fold-down rubber eyecup design more fit the glasses wearer that prevent stray light entering when using
Advanced 5-Element HD Optics: Precision-engineered with muti-coating optical system are characterized by highly effective coatings and high light transmission, which delivers sharper and clearer observed images with better color correction and contrast
Wide 66-deg apparent field offers expansive views of the moon; star clusters; and the Milky Way; generous 13mm eye relief allows comfortable viewing distance and lets eyeglass wearers see the entire field of view
15mm eyepiece offer wide field of view and superior performance; 4-element design deliver sharp image with good color correction and contrast; aluminum 1.25 inch barrel is internally blackened to eliminate light scattering; thread accept 1.25 inch filter