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🌠 Capture the cosmos wider, brighter, and sharper — your telescope’s new best friend!
The SVBONY 0.5x Focal Reducer with C-Mount Adapter transforms your telescope into a faster, wider-field imaging powerhouse. Designed for 1.25" focus tubes and standard C-mount cameras, it features precision threading, broadband green coated optics to enhance light gathering, and an internal design that minimizes reflections. Lightweight yet durable aluminum construction ensures long-lasting performance, making it ideal for professional-grade astrophotography and observing.
| ASIN | B07MG3792W |
| Best Sellers Rank | #256 in Telescope Photo Adapters |
| Brand | SVBONY |
| Coating | Broadband green coated |
| Compatible Devices | Camera |
| Customer Reviews | 3.8 out of 5 stars 42 Reviews |
| Exit Pupil Diameter | 0.63 Inches |
| Eye Piece Lens Description | Broadband Green Coated |
| Field Of View | 2.5 Degrees |
| Finderscope | Reflex |
| Focal Length Description | 0.5x reduction |
| Focus Type | Manual Focus |
| Item Dimensions D x W x H | 1.9"D x 1.9"W x 1.9"H |
| Item Weight | 0.04 Kilograms |
| Manufacturer | SVBONY |
| Manufacturer Part Number | FW2159A-F9154A |
| Model Number | FW2159A-F9154A |
| Mount | 1.25 inches mount |
| Optical Tube Length | 1.25 Inches |
| Optical-Tube Length | 1.25 Inches |
| Product Dimensions | 1.9"D x 1.9"W x 1.9"H |
| Telescope Mount Description | 1.25 inches mount |
| Warranty Description | We provide 1 year warranty for SVBONY telescope accessories and 30 days no reason to return. Beyond the warranty period: We still offer maintain service, buyers are required to afford corresponding costs. We processed in the most hassle-free way possible.You just need to contact with us on Amazon ,we will reply you within 12 hours |
| Zoom Ratio | 0.5 |
J**Y
Best at f/7 or higher. I used a 20mm extension tube to get close to 0.5 on my ASI120 camera.
I bought this to try to widen the star field on my f/4 guidescope. Three things I learned 1) focal reducers work at f/7 or higher. 2) The back focus for 0.5 is around 32-37mm. 3) This works nicely when screwed onto an eyepiece.
R**N
Nice plossl upgrade
It's not amazing, but it's definitely a great upgrade for the price. I'm happy to use it and find it a pretty good value. It almost replaces my 25mm plossl. I have no issues with the image quality, and the build is solid. Used with a150mm SCT.
C**0
1.25" EYEPIECE THREAD to C THREAD
It works ... but not what I was shopping for. Nor is very adaptable. I misread the product info and thought I was purchasing a T to C thread 0.5x focal reducer. Not an eye-piece filter thread reducer.
M**.
Making a Great scope Better...
Used Their Products Before....Never a Problem....
I**N
Terrible focus
I got this lens to expand the field of view on my telescope. The first picture attached to this review is prime focus through the telescope, and as you can see it's not quite large enough to get the entire moon. The second picture is the same camera, same settings, and same weather conditions, taken through this lens. The most obvious problem is the massive glowing halo around the moon. That was present in every shot I took with the lens. Less obvious, but more problematic, is that it can't actually get things in clear focus, making it impossible to resolve fine detail. The only reason I gave this lens 2 stars instead of 1 is because it does what it is supposed to do in that it expands the field of view to allow you to see larger objects.
P**S
Works but has coma
Off-axis stars and planets are distorted by coma, not surprising at this price. But it does work.
P**T
Very poor focus
Really not worth even the low price asked. Anything imaged through this reducer is surrounded by a significant halo, I assume due to a poor curve of the lens.
S**I
Works great, well priced.
Works well for terrestrial viewing, I will try it on the moon soon...
P**T
Performs to specification.
Performs as required
H**T
Foggy image
Foggy image, no matter what I do. Using 8" Newtonean, reducer attached to svbony 305 pro camera, the reducer is 5.5 cm from the sensor.
Trustpilot
2 weeks ago
1 month ago