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SVBONY 1.25" 31.7mm 0.5X Focal Reducer for Telescope Eyepiece Astronomy
Reduction factor of about 0.5x effectively halves the focal length of a telescope; enabling lower magnification; wider field of view and shorter exposure times for astrophotography.
Fits All Standard 1.25" Scope Eyepieces
Package Includes:
1 X SVBONY 1.25" Telescope 0.5X Focal Reducer
0.5X Focal Reducer Features:
Reduction factor of about 0.5X
Expands the image field of your webcam;
More light intensity;
Can be used visually with eyepiece and filter;
Also optimal for video astronomy;
Take images of larger areas of the Moon's surface.
0.5X focal reducer: 28x0.6mm threads for eyepieces, camera adapters, diagonals, extender tubes and other accessories with standard 1.25" threads, increases the image field of your web cameras.
Pure optical glass lens
Pure optical glass lens and broadband coating optics increase light transmission and prisms are held in a black-anodized aluminum housing for better correction.
Solid Construction
The prisms are held in a sturdy and durable black-anodized aluminum housing for better correction. It is not recommended for very fast scopes or very wide angle eyepieces.
PGF
2025-08-28 10:48:21
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.
kd8txw
2025-08-15 16:51:14
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.
Jake Cook
2025-07-31 14:02:55
It threaded on fine but dont know how well it works because couldnt achieve focus with my newtonian
juan alvarez
2025-07-30 14:36:13
Funciona en telescopios de gran focal
Alsamman
2025-07-28 16:37:39
Sharp in the center with presence of distortions in the sides. That was expected for this price.
YB
2025-07-27 11:59:50
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.
Customer
2025-07-03 13:37:25
Threads onto my SVBony camera great.
Jeff
2025-07-01 15:53:25
Yes, it reduces the focal length, but the optics are not good. Chromatic aberration & narrow field of view
Customer
2025-06-20 14:27:50
Excelente producto, calidad superior, bonito diseño y color, llegó super rápido, gracias!!!!!
SK
2025-03-27 10:00:19
Metal construction , no plastic
Juan C.
2025-03-12 16:46:42
Buen precio, y la relación calidad precio esta bien funciona con mi cámara ocultar
joe
2025-01-30 11:03:59
i wanted lower wider FOV but this unit is just junk i just missed the 30 days rerturn by 1 day, i should have returned as soon as i tested but i was busy and forgot anyway skip this item. even though it was just over 30 days svbony contacted me for a full refund. they stand behind their products which is great to know
Martin Martinez Alvarado
2025-01-28 18:44:17
La calidad del producto es suficiente para observaciones rápidas. No funciona con ocultes de más de 25 mm, pues se forma una viñeta. Es útil para oculares medianos, quizás 20 mm o menos. La reducción es de 0.7 aprox no 0.5
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