SVBONY Eyepiece Optional Lens 4/10/23mm Wide Angle 62°Aspheric HD Fully Coated for 1.25inch 31.7mm Astronomic Telescopes

I liked it ALOT. I actually reordered it because I lost the one I had. It's good quality. And I like the 62 degree field of view on it. I used it to photograph Venus last night. And it was clear. In my Orion xt6 this eyepiece provides 300x magnification. It's a very good budget eyepiece.

I liked it ALOT. I actually reordered it because I lost the one I had. It's good quality. And I like the 62 degree field of view on it. I used it to photograph Venus last night. And it was clear. In my Orion xt6 this eyepiece provides 300x magnification. It's a very good budget eyepiece.

I was shocked by how crisp the view I got from these eyepieces are when I first them in (one by one). I fully agree with previous comments that these eyepieces are decent and much much better than H20 (20mm) & SR4 (4mm) eyepieces I got together with the purchase of telescope. 1) The build quality is not bad. Better than what I expect. The 23mm one is huge at hand and 10mm one is actually smaller than 4mm one. I would say 3/5 2) The optical quality is very good. The view is crystal clear and no apparent distortion. For 4mm one, the view is actually very crisp except for darker background. 4/5 3) The wide angle view is indeed with what it claimed. Viewing from 23mm even gives me a feeling like watching stars through a spaceship windows... 3/5 4) The eye relief is not very long but not bad. For 23mm, I can easily look through it when I wear eyeglass. Looking through 4mm is a little bit of harder to watch through with glasses but much better than my SR4, which is simply not possible. 2.5/5 5) The cost for those three pieces is low. $12 each. 5/5 Overall, I would like to see that these eyepieces are well built, crispy clear and having wide angle view as advertised. In my opinion, if your budget is only about $50 and still want 3 decent eyepieces , this item is one ultimate budget choice.

Got the 4mm and 23mm. both EP offers great TFoV in small F4 newton. The 23mm is really sharp, less the 4mm. Contrast is not at the level of the plossl, SP as both are very brights, may be too much on fast scopes. Not suitable for short Focal ratio. But for cheap, one can have a wide TFoV eyepiece (23mm). So good enough for the price paid.