SVBONY eyepieces are used to increase magnification to ease viewing Beautifully made with machined housings The metal body gives you a different metallic feel experience 62 degree ultra wide field of view Maximum detail and definition across the entire field of vie;get high definition and a virtually distortion free image The structure of the optical system Aspheric eyepiece designed primarily for planetary observation and perfect for deep sky objects built-in black extinction thread SVBONY 23mm telescopes eyepiece has black extinction thread, which can reduce the interference of other light, and make the observation effect more better. FMC broadband multiple coating for high light transmission. Equipped with a precision-made standard 1.25-inch lens barrel that is compatible with any telescope that accepts 1.25-inch eyepieces You can connect cell phone adapter to tripod if you need. For example,if you have a pocket monocular or binoculars,and you want to pictures or videos,then you can connect it to a tripod Steps to install the phone: 1.Pull the phone support plate to the maximum (3.93in wide) 2.Put the phone in to fix it. 3.Turn the screw under the phone support plate to adjust the phone so that the camera of the phone is aligned with the eyepiece. Protective Soft Pad The contact surfaces covered by soft high density EVA pads. The most protection for your eyepieces and phones from scratches and damages.