LONG PERNG EYE ZOOM 7-21mm

The Longperng 7-21mm Zoom Eyepiece is a practical accessory for any telescope with a 1.25 inch eyepiece socket, allowing a wide magnification range without having to change the eyepiece, it is a good solution for those who do not want to acquire a wide variety of eyepieces,

this Longperng Zoom Eyepiece allows to vary the focal length of the eyepiece from 21mm to 7mm continuously so it is possible to adjust it to any focal length within that range, the magnifications obtained depend on the focal length of the telescope as the magnifications are the result of dividing the focal length within that range. The magnifications obtained depend on the focal length of the telescope as the magnifications are the result of dividing the focal length