This eyepiece is very good and very cheap. Also for the Bino observation very interesting, because the focal lengths can be set very fine and are therefore easy to bring congruent.
The latest generation of Sebens 31.7mm (1.25 ") Super Zoom Plössl eyepieces in the highest optical quality and finish. The stepless adjustability of the focal length from 8mm to 24mm offers the user the possibility to quickly and easily achieve different magnifications with his telescope or spotting scope. The Seben Super Zoom Plössl eyepiece 8-24mm replaces some of the Plössl eyepieces.
With the new Seben Super-Zoom Plössl eyepiece 8-24mm, celestial, animal and nature observation as well as planetary observation will not only be more convenient, easier and more fun, but you will also save real money. Instead of buying multiple eyepieces, all you need is a Seben Super Zoom Plössl Eyepiece 8-24mm!
You can calculate the magnification by dividing the focal length of your telescope by the focal length of the eyepiece; In this case, it depends on which focal length you have chosen in your Seben Super Zoom Plössl eyepiece, because its infinitely variable zoom of 8mm to 24mm focal length allows you to adjust numerous magnifications!