SVBONY SV154 15mm 1.25-inch telescope eyepiece, super-wide 70 degree apparent field of view allows you to gradually lose yourself in space, giving you a wonderful experience 15mm focal length It is suitable for daily astronomical observation needs, giving you an unforgettable experience Metallic Twist-Up eyecups SV154 telescope eyepiece's eyecup is made of metal, durable and easy to shape.The eyecup is covered with a rubber shell, which makes you feel comfortable and helps protect your eyes. 1.25 inch Barrel Size SV154 telescope eyepiece's barrels threaded for use with 1.25" eyepiece filters (M28.5*0.6). FMC optical glass Bring you a clearer, sharper and true vision internally blackened eyepiece barrel to eliminate light scatter and provide a crisp image Interface with M42x0.75 thread: With T/T2(M42x0.75mm) male thread for T/T2 connectors. Barlow lens has a T mount adapter so you can attach a DSLR camera with an available T-mount Chromatic Aberration Image 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.