SVBONY 0.5X Telescope Focal Reducer 1.25 inches Filter Thread 28x0.6mm on Both Sides Reduces The Focal Length for Telescope Eyepiece Astronomical

A powerful focal reducer in a small factor. I purchased it to help my guiding scope focus on large objects that took too much of my field of view and did not care about aberrations that might accompany this type of optics. Good value for the money.

I'm trying to find the focus point while using it with an Orion 60mm guidescope and a ZWO 120 camera & 1.25 adapter. I ordered an Orion 1.25" extension tube. Maybe that will help but I'm not sure. For $11 the lens looks OK to me. Hopefully I'll be able to use it. If not I will try it with my eye pieces.

It threaded on fine but dont know how well it works because couldnt achieve focus with my newtonian

Funciona en telescopios de gran focal

Sharp in the center with presence of distortions in the sides. That was expected for this price.

The threading is horrible, the optics are even worse (it reduced the field of view of the sky as it should, but drastically reduced my eyepiece's FOV). It also doesn't thread on properly to the bottom of my 1.25 inch eyepieces, or my 1.25 inch diagonal mirror. The focul reducer lens nearly fell into the optical tube. Will be making a return right away. I've used other SVBONY products like their eyepieces and phone-telescope adapters; this is the first disappointing product that I've purchased from them.

Threads onto my SVBony camera great.

Yes, it reduces the focal length, but the optics are not good. Chromatic aberration & narrow field of view