---
product_id: 67636928
title: "SVBONY 0.5X Focal Reducer - 1.25 inches Fully Multi Coated for Telescope Eyepiece Photography and Observing"
brand: "svbony"
price: "€ 46.68"
currency: EUR
in_stock: true
reviews_count: 12
category: "Svbony"
url: https://www.desertcart.com.cy/products/67636928-svbony-0-5x-focal-reducer-1-25-inches-fully-multi
store_origin: CY
region: Cyprus
---

# 0.5x focal length reducer for ultra-wide views Precision metal build with 28.5x0.6 threaded interface Fully multi-coated optics for max contrast SVBONY 0.5X Focal Reducer - 1.25 inches Fully Multi Coated for Telescope Eyepiece Photography and Observing

**Brand:** svbony
**Price:** € 46.68
**Availability:** ✅ In Stock

## Summary

> 🌌 See the Universe Bigger, Brighter, Faster!

## Quick Answers

- **What is this?** SVBONY 0.5X Focal Reducer - 1.25 inches Fully Multi Coated for Telescope Eyepiece Photography and Observing by svbony
- **How much does it cost?** € 46.68 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.cy](https://www.desertcart.com.cy/products/67636928-svbony-0-5x-focal-reducer-1-25-inches-fully-multi)

## 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

- • **Seamless Integration:** Precision metal design with standard 1.25" eyepiece threading ensures effortless, secure attachment for both visual and astrophotography setups.
- • **Expand Your Cosmic Canvas:** Halve your telescope’s focal length to unlock breathtakingly wider fields of view—see more, miss less.
- • **Crystal-Clear Contrast Boost:** Fully multi-coated lenses eliminate glare and reflections, delivering razor-sharp, high-contrast celestial images.
- • **Faster, Sharper Astrophotography:** Cut your imaging time by up to 6x by concentrating more photons on your sensor—capture stunning star fields with speed and clarity.
- • **Versatile Visual & Imaging Powerhouse:** Perfect for both eyepiece viewing and CCD imaging, this focal reducer is the essential upgrade for serious stargazers and astro-photographers alike.

## Overview

The SVBONY 0.5X Focal Reducer is a precision-engineered 1.25-inch telescope accessory that halves your telescope’s focal length, dramatically widening your field of view. Fully multi-coated optics maximize contrast by reducing reflections, while its robust metal construction with standard threading ensures reliable, easy attachment. Ideal for both visual observation and astrophotography, it accelerates imaging speed by concentrating more light onto your sensor, making it a must-have for millennial professionals seeking to elevate their stargazing and astro-imaging experience.

## Description

desertcart.com : SVBONY 0.5X Focal Reducer - 1.25 inches Fully Multi Coated for Telescope Eyepiece Photography and Observing : Electronics

Review: A great way to expand your field of view! - This focal reducer screws into the nose of an astrophotography camera or 1.25" eyepiece. For visual use, it turns a 20mm eyepiece into a 40mm, both decreasing the magnification and increasing the field of view. In astrophotography, the focal reducers does that, but it also reduces the size of stars on the sensor by half, meaning you can image faster with a wider field of view. For example, an f/10 camera/scope is reduced to f/5 will image roughly six times faster (if my math is correct) because the focal reducer concentrates more photons on each well in the sensor. This focal reducer works well and gives a nice view. I highly recommend it!
Review: Works but needs basic instructions for newbies. - I had to call a few places to get this info: Take the stock lens off the camera. Don't use it with this thing on. Focusing can be touchy. On my Astro Fi 130 with a Pegasus focuser I found that I was overshooting the focus point and seeing nothing because the camera takes a few seconds to get a lock in Sharpcap plus the focuser has 20,650 steps. The range of steps between fuzzing out/seeing anything/fuzzing out again was 150 steps. Until I went from 0 to 20,650 at 100 step intervals waiting 5 seconds for Sharpcap each time, I couldn't even tell if it would ever work. Finally I got a fair shot of Vega..... I don't know if it's any good for a 5 inch reflector but...eh.

## Features

- 0.5x focal reducer cuts the telescopes focal length in 0.5 times of original's to get a wider field of view
- Fully anti-reflection coatings on all air-glass surfaces for increased contrast
- The focal reducer is great for visual use for a bigger FOV and is indispensable when CCD imaging
- Fully metal structure design;both the ends of the interface part is 28.5x0.6 thread
- Directly connect the interface to the eyepiece;there is a very good performance in both visual and photography

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07923SJB4 |
| Best Sellers Rank | #44 in Telescope Eyepieces |
| Brand | SVBONY |
| Coating | Fully Multi Coated |
| Compatible Devices | TELESCOPE |
| Customer Reviews | 4.2 4.2 out of 5 stars (201) |
| Exit Pupil Diameter | 63.5 Millimeters |
| Eye Piece Lens Description | FMC |
| Finderscope | Reflex |
| Focal Length Description | 20 millimeters |
| Focus Type | Manual Focus |
| Item Dimensions D x W x H | 2"D x 0.8"W x 2"H |
| Item Weight | 0.04 Pounds |
| Manufacturer | SVBONY |
| Manufacturer Part Number | FUSF9154A |
| Model Name | FUSF9154A |
| Model Number | FUSF9154A |
| Mount | Equatorial Mount |
| Objective Lens Diameter | 31.75 Millimeters |
| Optical-Tube Length | 20 Millimeters |
| Power Source | focal reducer |
| UPC | 609378745393 609378745546 |
| 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 | 2:1 |

## Product Details

- **Brand:** SVBONY
- **Eye Piece Lens Description:** FMC
- **Finderscope:** Reflex
- **Focus Type:** Manual Focus
- **Model Name:** FUSF9154A
- **Objective Lens Diameter:** 31.75 Millimeters
- **Optical Tube Length:** 20 Millimeters
- **Power Source:** focal reducer
- **Product Dimensions:** 2"D x 0.8"W x 2"H
- **Telescope Mount Description:** Equatorial Mount

## Images

![SVBONY 0.5X Focal Reducer - 1.25 inches Fully Multi Coated for Telescope Eyepiece Photography and Observing - Image 1](https://m.media-amazon.com/images/I/61xXnxB5hlL.jpg)
![SVBONY 0.5X Focal Reducer - 1.25 inches Fully Multi Coated for Telescope Eyepiece Photography and Observing - Image 2](https://m.media-amazon.com/images/I/61+RKZGmCOL.jpg)
![SVBONY 0.5X Focal Reducer - 1.25 inches Fully Multi Coated for Telescope Eyepiece Photography and Observing - Image 3](https://m.media-amazon.com/images/I/61cHf993P7L.jpg)
![SVBONY 0.5X Focal Reducer - 1.25 inches Fully Multi Coated for Telescope Eyepiece Photography and Observing - Image 4](https://m.media-amazon.com/images/I/51bSjREzN2L.jpg)
![SVBONY 0.5X Focal Reducer - 1.25 inches Fully Multi Coated for Telescope Eyepiece Photography and Observing - Image 5](https://m.media-amazon.com/images/I/61tUtqgj9iL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ A great way to expand your field of view!
*by T***S on November 29, 2024*

This focal reducer screws into the nose of an astrophotography camera or 1.25" eyepiece. For visual use, it turns a 20mm eyepiece into a 40mm, both decreasing the magnification and increasing the field of view. In astrophotography, the focal reducers does that, but it also reduces the size of stars on the sensor by half, meaning you can image faster with a wider field of view. For example, an f/10 camera/scope is reduced to f/5 will image roughly six times faster (if my math is correct) because the focal reducer concentrates more photons on each well in the sensor. This focal reducer works well and gives a nice view. I highly recommend it!

### ⭐⭐⭐⭐⭐ Works but needs basic instructions for newbies.
*by K***R on May 20, 2021*

I had to call a few places to get this info: Take the stock lens off the camera. Don't use it with this thing on. Focusing can be touchy. On my Astro Fi 130 with a Pegasus focuser I found that I was overshooting the focus point and seeing nothing because the camera takes a few seconds to get a lock in Sharpcap plus the focuser has 20,650 steps. The range of steps between fuzzing out/seeing anything/fuzzing out again was 150 steps. Until I went from 0 to 20,650 at 100 step intervals waiting 5 seconds for Sharpcap each time, I couldn't even tell if it would ever work. Finally I got a fair shot of Vega..... I don't know if it's any good for a 5 inch reflector but...eh.

### ⭐⭐⭐ It works, but doesn't thread into my SVBONY SV205 camera properly
*by B***. on March 27, 2021*

The size looks right, but the threads don't hold. I almost lost the reducer down the focus tube. I have it held onto the SV205 with scotch tape. It works, but I'm not all that happy about it. I'm only using it for imaging the moon. I only just tested it tonight, and the wind makes it impossible to test the image quality, but nothing stands out as awful in the shots I took. ... I think I need even more reduction, to be honest, but that's not this part's fault.

## Frequently Bought Together

- SVBONY 0.5X Focal Reducer - 1.25 inches Fully Multi Coated for Telescope Eyepiece Photography and Observing
- SVBONY Telescope Filter 1.25 inches UHC Filter Astrophotography to Improve The Image Contrast Reduces Light Pollution (1.25 inch)
- SVBONY Telescope Filter, 1.25 inches UV IR Cut Block Filter, Multi Coated Infra Red Filter Keep Planetary Images Sharp, for CCD Digital Astrophotography

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*Product available on Desertcart Cyprus*
*Store origin: CY*
*Last updated: 2026-04-26*