• Standard 1.25 31.75mm fitting diameter compatible with any astronomical telescope with 1.25" focuser. • 66 degree Wide View Angle: Perfects for broad field observations from lunar, medium sized star clusters to wide range of cloudy nebulas and deep sky targets with extra sharpness. • 6mm focal length telescope eyepiece: High power and medium eyepiece fits for viewing surface and potholes details. • Generous 15mm eye relief allows comfortable viewing distance and lets eyeglass wearers see the entire field of view. • Fully multi coated eyepieces delivers sharp images with good color correction and contrast.