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🌠 Capture the cosmos wider and sharper — don’t let your telescope miss a moment!
This 1.25" focal reducer with C-mount adapter by SVBONY transforms your telescope into a prime focus astrophotography powerhouse. Compatible with standard C-thread cameras, it halves your focal length to deliver a significantly wider field of view, while broadband green coating and fully threaded metal construction reduce reflections and ensure stable, high-contrast imaging. Perfect for millennial pros seeking to elevate their night sky captures with professional-grade optics.
| ASIN | B07MG3792W |
| Additional Features | Prime focus photography adapter for telescopes |
| Brand | SVBONY |
| Coating | Broadband green coated |
| Compatible Devices | Camera |
| Customer Reviews | 4.2 out of 5 stars 39 Reviews |
| Exit Pupil Diameter | 0.63 Inches |
| Eye Piece Lens Description | Broadband Green Coated |
| 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 | 48D x 48W x 48H millimeters |
| Item Highlight | Adapter to CCD Camera, for Telescope Eyepiece Photography, Internal Threaded Design, Broadband Green Coated Lens |
| Item Weight | 0.04 Kilograms |
| Manufacturer | SVBONY |
| Manufacturer Part Number | FW2159A-F9154A |
| Model Number | FW2159A-F9154A |
| Mount | 1.25 inches mount |
| Number of Items | 1 |
| Number of Packs | 1 |
| Objective Lens Diameter | 31.75 Millimeters |
| Objective lens diameter | 31.75 Millimeters |
| Optical tube length | 1.25 Inches |
| Optical-Tube Length | 1.25 Inches |
| Product dimensions | 48D x 48W x 48H millimeters |
| Telescope mount description | 1.25 inches mount |
| Unit Count | 1 Count |
| Zoom Ratio | 0.5 |
S**I
Works great, well priced.
Works well for terrestrial viewing, I will try it on the moon soon...
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.
P**T
Performs to specification.
Performs as required
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.
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
4 days ago
1 week ago