SVBONY telescope eyepiece 15mm, 68 degree ultra wide angle eyepiece provide you a extremely large field of vision perfect to observe the moon star clusters and the milky way. Internally blackened eyepiece barrel to avoid internal reflection and provide a crisp image. FMC(fully multied coating) film can reduce the reflection and refraction of light and enhance the transmission of light. 4 Lenses in 3 Groups:Multiple group lens combination to improve optical performance and deliver sharp image. SVBONY eyepiece 68° is suitable for any 1.25 inches telescope, diagonal mirror and telescope accessories. Standard 1.25 inches filter thread, can be used to connect moon filters, planetary filters and other telescope filters to obtain clearer and more contrasty images. 17mm Eye Relief: You can really put you eye up to the lens without your eyelashes getting in the way. If you are looking for a wider field of view of the night sky then this eyepiece is great for that. If you need moderate magnification for planetary objects and globular clusters, within its intended use of moderate magnification of non-dso objects, it does the job admirably. SVBONY 68-degree ultra-wide-angle 6mm eyepiece has a comfortable and wide field of view, suitable for planetary observation; the 68-degree ultra-wide-angle field of view allows for a broad view of the moon, star clusters, and the Milky Way, and also helps locate and track celestial bodies. The 1.25-inch lens barrel is equipped with m26.5*0.6 standard internal thread, which can accommodate standard 1.25-inch filter lenses. High magnification for eyepieces to see more details of the moon; bands of Jupiter clearly; SVBONY 2x barlow lens is a better choice. Completely multi-coated and pure optical glass lens for optimum image brightness high contrast.Clear and bright images can be obtained for moon, stargazing, etc. Cemented doublet optic structure reduce the chromatic aberration with the increase of magnification.