---
product_id: 376665721
title: "0.5X Telescope Focal Reducer 1.25 inches Filter Thread 28x0.6mm on Both Sides Reduces The Focal Length for Telescope Eyepiece Astronomical"
brand: "svbony"
price: "148.55 DT"
currency: TND
in_stock: true
category: "Svbony"
url: https://www.desertcart.tn/products/376665721-0-5x-telescope-focal-reducer-1-25-inches-filter-thread
store_origin: TN
region: Tunisia
---

# Increases field of view & astro photo speed 0.5x focal length reducer Fits 1.25" standard eyepieces 0.5X Telescope Focal Reducer 1.25 inches Filter Thread 28x0.6mm on Both Sides Reduces The Focal Length for Telescope Eyepiece Astronomical

**Brand:** svbony
**Price:** 148.55 DT
**Availability:** ✅ In Stock

## Summary

> 🌠 Expand your universe with every glance!

## Quick Answers

- **What is this?** 0.5X Telescope Focal Reducer 1.25 inches Filter Thread 28x0.6mm on Both Sides Reduces The Focal Length for Telescope Eyepiece Astronomical by svbony
- **How much does it cost?** 148.55 DT with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/376665721-0-5x-telescope-focal-reducer-1-25-inches-filter-thread)

## 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

- • **Sleek & Durable Design:** Anodized aluminum housing built to last through countless stargazing sessions.
- • **Double Your Sky Coverage:** Halves your telescope's focal length for a breathtakingly wider view.
- • **Universal 1.25" Thread Fit:** Seamlessly integrates with all standard eyepieces and photo adapters.
- • **Premium Multi-Coated Optics:** Ensures crisp, high-contrast images with minimal glare and reflections.
- • **Astrophotography Game-Changer:** Shortens exposure times, capturing celestial wonders faster and clearer.

## Overview

The SVBONY 0.5X Telescope Focal Reducer is a precision optical accessory designed to halve your telescope's focal length, dramatically increasing the field of view and reducing exposure times for astrophotography. Compatible with all standard 1.25" eyepieces and photo adapters, it features fully multi-coated pure optical glass lenses housed in a durable anodized aluminum barrel. Ideal for enhancing visual astronomy and video capture, this compact reducer transforms your telescope into a wide-field stargazing powerhouse.

## Description

Features： Apply to: 0.5x reducer for screwing into a filter thread;more lens speedUsing for: Increase the image field of your web camera;Use the reducer visually with an eyepiece;also ideal for video astronomy See the Moon: Record large areas of the moon's surface Specifications: Focal Reducer: 0.5X Lens Material: pure optical glass lens Lens material: Broadband coating Sleeve material: Metal Barrel Size: 1.25 inch / 31.7mm Thread interface: M28x0.6 pitch (Fine Thread) Total item length (including external thread): 0.55inch / 14mm Total item length (excluding external thread): 0.43inch / 11mm Clear aperture: 0.87inch / 22mm Package Include: 1 X SVBONY 1.25" Telescope 0.5X Focal Reducer

## Features

- Fits all standard 1.25" scope eyepieces;Its role is to reduces the focal length of your telescope by half ;increasing the field of view;and shorter exposure times for astrophotography;usually for a longer focal length telescope
- The reducer has standard 1.25inch telescope threads M28x0.6 and fits easily into any 1.25" eyepiece or any 1.25" photo adapter;diagonal;extender tube;increase the image field of your web cameras
- Fully multi-coated optics held in a black-anodized aluminum filter cell;nice anodized aluminum housing
- It is not recommended for very fast scopes or very wide angle eyepieces for visual
- Screw the reducer into a 1.25" eyepiece;and you will get a smaller magnification and a significantly larger field of view;simply use the reducer if you still need the correct eyepiece

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B01EUY0VFK |
| Additional Features | Focal Length Reduction for Increased Field of View |
| Best Sellers Rank | #133,409 in Electronics ( See Top 100 in Electronics ) #26 in Telescope Filters |
| Brand | SVBONY |
| Coating | Fully Multi-Coated |
| Compatible Devices | Devices with 1.25'' eyepiece or photo adapter |
| Customer Reviews | 4.0 4.0 out of 5 stars (133) |
| Exit Pupil Diameter | 0.79 Millimeters |
| Eye Piece Lens Description | Fully Multi Coated |
| Finderscope | Reflex |
| Focal Length Description | Reduced focal length of 0.5x, original focal length approximately 63.4 millimeters |
| Focus Type | Manual Focus |
| Item Dimensions D x W x H | 51D x 13W x 51H millimeters |
| Item Weight | 18 g |
| Manufacturer | SVBONY |
| Manufacturer Part Number | FF9115A |
| Model Name | RM |
| Model Number | FF9115A |
| Mount | Altazimuth Mount |
| Objective Lens Diameter | 31.7 Millimeters |
| Optical-Tube Length | 1.25 Inches |
| Power Source | Focal Reducer |
| UPC | 601490381145 |
| Unit Count | 1 Count |
| Zoom Ratio | 2:1 |

## Product Details

- **Brand:** SVBONY
- **Eye piece lens description:** Fully Multi Coated
- **Model name:** RM
- **Objective lens diameter:** 31.7 Millimeters
- **Optical tube length:** 1.25 Inches

## Images

![0.5X Telescope Focal Reducer 1.25 inches Filter Thread 28x0.6mm on Both Sides Reduces The Focal Length for Telescope Eyepiece Astronomical - Image 1](https://m.media-amazon.com/images/I/61v17kmA1lL.jpg)

## Questions & Answers

**Q: Can a filter be threaded onto this redeucer?**
A: This product has the same threading front and back as a 1.25" filter so it fits on the end of a 1.25" eyepiece.  However, I returned this product, as I discovered that placing the reducer at this point in the optical path reduced the FOV at the same time that it reduced the magnification.

**Q: is this compatible with the sv305 eye piece camers?**
A: thanks so much for your question.
Yes, the SVBONY 0.5X Telescope Focal Reducer 1.25 inches is compatible with the sv305 eye piece camers.
If any, please concact us via amazon message, we are always here for you.

**Q: Can this work with a mak cassegrains?(specifically the skymax 127**
A: Dear customer ,
Thanks for your contact.
Sorry, it fits all standard 1.25" scope eyepieces.

For accessories;we provide 2 months warranty;within 2 months;you can return for refund or replacement.If you have any other questions about warranty;please contact us freely;we will work with you win to win.
If my reply still doesn't answer your question well or you want to know more details about this product,please contact us by message on Amazon. Because the customer's message can be seen in the first time on Amazon, and will solve the problem as soon as possible. Once I receive your response, I will try my best to answer your questions.
Sincerely look forward to your reply.
Best wishes !
Kelly

**Q: Will this focal reducer give me a wider field of view when screwed onto the svbony sv105 eyepiece camera?**
A: Yes. Magnification reduces and field of view widens.

## Frequently Bought Together

- SVBONY 0.5X Telescope Focal Reducer 1.25 inches Filter Thread 28x0.6mm on Both Sides Reduces The Focal Length for Telescope Eyepiece Astronomical
- SVBONY SV105 Telescope Camera, 1.25 inch IMX307 CMOS Color Electronic Telescope Eyepiece, Planetary Camera for Telescope, Suitable for Astrophotography Beginners
- SVBONY Telescope Filter 1.25 inches UHC Filter Astrophotography to Improve The Image Contrast Reduces Light Pollution (1.25 inch)

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*Product available on Desertcart Tunisia*
*Store origin: TN*
*Last updated: 2026-07-08*