SV191 Zoom Eyepiece, Zoom 7.2 to 21.6mm, Parfocal Design, 1.25" FMC Telescope Eyepiece, 42°-65° FOV, 7 Element 4 Group Telescope Accessories for Astronomic Telescopes Visual and Spotting Scopes

Excellent quality and so easy to use.

Hyperion-Klasse, das Maß der Dinge bei den 1.25er Zoom-Okularen. P A R F O K A L !!! Wirklich richtig gut !!!!!

I was pleasantly surprised by this zoom eyepiece. Years ago I owned an inexpensive zoom and I disappointed in the optics as they weren't as sharp as fixed eyepiece. However I've used this zoom twice so far, the weather unfortunately been cloudy much of the time . I've used this on two telescopes and I can't find anything to complain about; I've only looked at the Moon and Jupiter. but the image is very sharp. It's parfocal across the range. I observed a transit on Jupiter around 200 x with a 125mm Orion Maksutov telescope and couldn't see any difference with a fixed eyepiece

Comparado con el Celestron zoom es prácticamente igual aunque con un poquito más de aumento, aunque lo probe en un NexStar 130 SLT, así que supongo que un mejor equipo se le sacaría más provecho

The product is original and was packaged very well. The Lens works as advertised and the image clarity is flawless, I own a 6mm non zoom Lens already but honestly it’s nigh impossible to find the planet correctly with such high magnification. However with this Len’s you can start zoomed out and easily locate the planets like Saturn which is very faint in an urban city, then zoom in slowly to get a crystal clear view of the planets, I could very easily see the rings of Saturn with this Lens without any distortion.