SVBONY SV115 Telescope Filter O-III Filter Narrowband Cuts Light Pollution Filter for Astronomy Telescope (2 inch)

Exactly what I would expect for the price. I'm only a novice astronomer so I can't give a professional opinion. I can say that it does improve my view when star gazing and looking for Galaxies or Nebulas. Well worth the money spent

This works great! SvBony is building a great reputation here. Love their products.

Some folks shy away from 1.25 oiii's but the key is exit pupil...on a lower power eyepiece this one is surprisingly good.

Works well. Able to see nebulae quite well.

I went from wondering if there was really an owl nebula there to being able to clearly define the nebula straight on in sub par skies. When using averted vision, I could occasionally make out the "eyes" in my 10" dob. Filter offers substantial improvement for cost.

I purchased both 1.25 and 2" filters for use on a 10" Meade. Both size filters make the image barely there as it darkens more than filters. The 2" at least is a little usable as it allows more light. I even used it to view the bright Jupiter and all it did was turn Jupiter a very dark blue.I do not recommend.

The 2 inch Svbony UHC and OIII filters would tighten in the Orion Q70 eyepieces. I would guess the thread tolerances for both manufactures are at their limits in opposite directions. I did notice the threads on the Svbony 2" filters are shorter than the threads on Orion 2" filters I'll be returning the OIII filter, UHC is past the return date. The 1.25 Svbony filters work fine with the 1.25 Orion and ES eyepieces that is have.

Item is just as advertised and works well, it is superbly made with good quality material. I find it a must have for stargazing and looking for those nebulas in all their beauty and splendor. The price is right and quality is spot on. Keep your eye on the sky…