SVBONY Telescope Eyepiece 9mm Bundle with Eyepiece 20mm, 66 Degree Ultra Wide Angle Eyepiece, 1.25 inches Telescope Accessories for Astronomical Observation

Clear and crisp image: FMC(fully multied coating) green film can reduce the reflection and refraction of light and enhance the transmission of light；9mm focal length and 66 degree ultra wide angle provide an amazing magnification and broad vision,perfect for lunar observations,medium sized star clusters, especially for deep sky targets. 6 Lenses in 4 Groups:Multiple group lens combination to improve optical performance, and delivers sharp images with good color correction and contrast; --Blackened lens edges and internally blackened eyepiece barrel to avoid internal reflection and provide a crisp image. 9mm focal length. 20mm focal length, fit for observing the lunar surface planets binaries and bright nebula interior,especially for deep sky targets. 5Lenses in 3 Groups:Multiple group lens combination to improve optical performance, and delivers sharp images with good color correction and contrast; --Blackened lens edges and internally blackened eyepiece barrel to avoid internal reflection and provide a crisp image.

• Wide observation field; 66 degree field of view eyepiece; enjoy a wide range of night sky at a glance; such as medium-sized star clusters; various cloud-like nebulae and other deep sky targets; also suitable for large-scale lunar observations
• 9mm telescope eyepiece; 9mm provides high magnification; enjoy the lunar craters and lunar seas up close; analyze more planetary details such as Saturn's rings; also used to resolve double stars; showing their separation and colors
• Generous 20mm eye relief allows comfortable viewing distance and lets eyeglass wearers see the entire field of view
• Design to reduce stray light; the edge of the telescope eyepiece lens is blackened; the internal blackening treatment is mastered to reduce the scattering of stray light; make the image brighter
• 1.25" eyepiece barrel; fits 1.25" telescopes and telescope accessories; such as barlow and mirror diagonal; filter thread inside the eyepiece barrel; can fit 1.25-inch filters