---
product_id: 121186558
title: "SVBONY Reducer for Telescope 1.25 inches 0.5X Focal Reducer with C-Mount Adapter to CCD Camera for Telescope Eyepiece Photography and Observing"
brand: "svbony"
price: "$53.41"
currency: USD
in_stock: true
reviews_count: 10
category: "Svbony"
url: https://www.desertcart.us/products/121186558-svbony-reducer-for-telescope-1-25-inches-0-5x-focal
store_origin: US
region: United States of America
---

# 2.5° field of view C-mount compatibility 0.5x focal reduction SVBONY Reducer for Telescope 1.25 inches 0.5X Focal Reducer with C-Mount Adapter to CCD Camera for Telescope Eyepiece Photography and Observing

**Brand:** svbony
**Price:** $53.41
**Availability:** ✅ In Stock

## Summary

> 🌠 Capture the cosmos like never before!

## Quick Answers

- **What is this?** SVBONY Reducer for Telescope 1.25 inches 0.5X Focal Reducer with C-Mount Adapter to CCD Camera for Telescope Eyepiece Photography and Observing by svbony
- **How much does it cost?** $53.41 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/121186558-svbony-reducer-for-telescope-1-25-inches-0-5x-focal)

## Best For

- svbony enthusiasts

## Why This Product

- Trusted svbony brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Lightweight Design:** Weighing only 0.04 kg, it's easy to handle and transport.
- • **Wider Perspectives:** Experience a larger field of view with every observation.
- • **Seamless Integration:** Fits perfectly into standard 1.25" focus tubes for hassle-free use.
- • **Precision Engineering:** Broadband green coating minimizes reflections for clearer images.
- • **Transform Your Telescope:** Adapt your setup for stunning astrophotography.

## Overview

The SVBONY 0.5X Focal Reducer is designed for telescope eyepiece photography, featuring a C-mount adapter for seamless camera integration. With a broadband green coating to reduce reflections, this lightweight reducer enhances your field of view to 2.5 degrees, making it an essential tool for both amateur and professional astronomers.

## Description

Product description This adapter make you attach your video camera with a 'C' or 'CS' thread to your telescope for prime focus photography. C-threads are commonly used in most consumer video cameras whereas the CS thread is mostly used in security cameras. The camera must have a standard removable C-mount lens, which is a 1" diameter thread. Will not work on video cameras with a fixed lenses or bayonet mount. Useway: attach the camera to the C-thread of this adapter. Then slide the 1.25" barrel into your 1.25" telescope focuser and you are ready to shoot. Internally grooved to reduce stray light reflection for maximum contrast Package Includes 1 x SVBONY 0.5x Focal Reducer 1 x C-Mount Adapter Broadband Green Coated Lens The 0.5x focal reducer is made of pure optical lens. And the lens is Broadband green coated lens, which increases light gathering ability and gets bright clear images Internal Threaded Design Threaded design in the barrel is friendly for users, which can minimize reflections and eliminate stray lights during strong light condition C-mount Adapter ---Adapt the focal reducer to a standard C-mount video camera ---Threads at the bottom of the c-mount adapter fit the threads on the focal reducer ---The threads at the top of the adapter fit the C-mount on your camera 0.5x Focal Reducer ---The 0.5x focal reducer fits into a standard 1.25" focus tube ---It will give you a much faster focus with larger field of view ---To CCD Camera for Telescope Eyepiece Photography and Observing Durable and Lightweight Fully metal construction is durable and good feeling; aluminum housing is sturdy and will last long time. 39g/1.38oz net weight will not be an extra burden for your devices Specifications

Review: 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.
Review: 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.

## Features

- This item will adapt the Focal Reducer to a standard C-mount video camera
- The threads at the bottom of the c-mount adapter fit the threads on the focal reducer
- The threads at the top fit the C-mount on your camera
- The unit then fits into a standard 1.25" focus tube. This adapter and our focal reducer give you a much faster system with a larger field of view
- This item including one C-mount adapter and one 0.5x focuser reducer lens; inside of the adapter is fully threaded to minimize reflections

## Technical Specifications

| Specification | Value |
|---------------|-------|
| 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 |

## Product Details

- **Brand:** SVBONY
- **Optical Tube Length:** 1.25 Inches
- **Eye Piece Lens Description:** Broadband Green Coated
- **Telescope Mount Description:** 1.25 inches mount
- **Product Dimensions:** 1.9"D x 1.9"W x 1.9"H
- **Focus Type:** Manual Focus
- **Finderscope:** Reflex
- **Item Weight:** 0.04 Kilograms
- **Compatible Devices:** Camera
- **Lens Coating Description:** Broadband green coated

## Images

![SVBONY Reducer for Telescope 1.25 inches 0.5X Focal Reducer with C-Mount Adapter to CCD Camera for Telescope Eyepiece Photography and Observing - Image 1](https://m.media-amazon.com/images/I/61-Sf8xbFTL.jpg)
![SVBONY Reducer for Telescope 1.25 inches 0.5X Focal Reducer with C-Mount Adapter to CCD Camera for Telescope Eyepiece Photography and Observing - Image 2](https://m.media-amazon.com/images/I/51pJDzsXniL.jpg)
![SVBONY Reducer for Telescope 1.25 inches 0.5X Focal Reducer with C-Mount Adapter to CCD Camera for Telescope Eyepiece Photography and Observing - Image 3](https://m.media-amazon.com/images/I/61NNHTR53BL.jpg)
![SVBONY Reducer for Telescope 1.25 inches 0.5X Focal Reducer with C-Mount Adapter to CCD Camera for Telescope Eyepiece Photography and Observing - Image 4](https://m.media-amazon.com/images/I/61YOSi05rlL.jpg)
![SVBONY Reducer for Telescope 1.25 inches 0.5X Focal Reducer with C-Mount Adapter to CCD Camera for Telescope Eyepiece Photography and Observing - Image 5](https://m.media-amazon.com/images/I/61ZIPqhvFgL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Best at f/7 or higher. I used a 20mm extension tube to get close to 0.5 on my ASI120 camera.
*by J***Y on August 1, 2022*

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.

### ⭐⭐⭐⭐ Nice plossl upgrade
*by R***N on August 31, 2025*

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.

### ⭐⭐⭐ 1.25" EYEPIECE THREAD to C THREAD
*by C***0 on August 6, 2022*

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.

## Frequently Bought Together

- SVBONY Reducer for Telescope 1.25 inches 0.5X Focal Reducer with C-Mount Adapter to CCD Camera for Telescope Eyepiece Photography and Observing
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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-05-15*