---
product_id: 191746469
title: "SVBONY SV157 1.25” Telescope Extension Tube Optical Length 40mm Total 70mm"
brand: "svbony"
price: "€ 32.72"
currency: EUR
in_stock: true
reviews_count: 9
category: "Svbony"
url: https://www.desertcart.hr/products/191746469-svbony-sv157-1-25-telescope-extension-tube-optical-length-40mm
store_origin: HR
region: Croatia
---

# Threaded ends for filters & accessories 70mm total length precision fit Full metal durable design SVBONY SV157 1.25” Telescope Extension Tube Optical Length 40mm Total 70mm

**Brand:** svbony
**Price:** € 32.72
**Availability:** ✅ In Stock

## Summary

> 🔭 Elevate your stargazing game with precision and style!

## Quick Answers

- **What is this?** SVBONY SV157 1.25” Telescope Extension Tube Optical Length 40mm Total 70mm by svbony
- **How much does it cost?** € 32.72 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/191746469-svbony-sv157-1-25-telescope-extension-tube-optical-length-40mm)

## 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

- • **All-Metal Durability:** Crafted from premium metal for long-lasting performance and rugged reliability.
- • **Anti-Reflection Design:** Fully threaded interior reduces stray light, delivering clearer, sharper views.
- • **Filter-Ready Threading:** Integrated 1.25" threaded ends let you effortlessly attach standard filters and accessories.
- • **Brass Compression Clamp:** Protect your valuable telescope gear with a secure, non-marring brass compression fitting.
- • **Seamless Focus Extension:** Enhance your telescope’s focus range with a precise 40mm optical length extension tube.

## Overview

The SVBONY SV157 Extension Tube is a 1.25-inch, 70mm total length optical accessory designed to extend your telescope’s focus range by 40mm. Made from durable all-metal materials, it features threaded ends compatible with standard 1.25" filters, an anti-reflective fully threaded interior, and a brass compression clamp to protect your equipment. Ideal for professional and enthusiast astronomers seeking enhanced clarity and versatile accessory integration.

## Description

Buy SVBONY SV157 1.25” Telescope Extension Tube Optical Length 40mm Total 70mm | Extension Tube, Help Eyepiece and Camera Focus, Full metal Design, Bottom Thread, Brass Compression: Faucet Extension Tubes - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

Review: great - very good well build
Review: Great product - This extension tube has standard 1.25" diameter threads to attach filters or other components. I use this with a 0.5x focal reducer attached to the end, plus a light pollution filter. The threads seem high quality. This is a nice long tube that allows me to attain proper back focus for the reducer. I attached an image of how it fits into my setup -- the camera goes into the extension tube at the correct depth, and the extension tube + reducer + filter goes into the eyepiece holder, connected to the visual back. (I plan to test this without the diagonal as well, which should work theoretically). The collar of the extension tube holding the camera in place is secure and I didn't have any issues with it moving during my captures. I'm able to achieve perfect focus (using Bahtinov mask) from 0.5x to 0.33x reduction with no noticeable star aberrations. (Telescope is Celestron 8", camera is QHY5iii715C, and the focal reducer is from Apertura.)

## Features

- SV157 1.25" extension tube can help your eyepiece and camera focus well;Let you enjoy more beautiful scenery
- Can install filters; SV157 1.25" extension tube is threaded at the end to accommodate a standard 1.25" filter
- Full metal design; SV157 1.25" extension tube is made of all-metal material and has a long service life
- Humanized bottom thread; The inside of the SV157 has full threads to reduce reflected light
- With a brass compression; with a brass compression insh to prevent the marring of your telescope accessories

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B083TQHTLG |
| Best Sellers Rank | #48 in Telescope Photo Adapters |
| Brand | SVBONY |
| Compatible Devices | Telescope, Camera, Filter |
| Customer Reviews | 4.5 out of 5 stars 72 Reviews |
| Eye Piece Lens Description | Plossl |
| Finderscope | Reflex |
| Focal Length Description | 40 millimeters |
| Focus Type | Manual Focus |
| Item Dimensions D x W x H | 4"D x 2"W x 2"H |
| Item Highlight | Extension Tube, Help Eyepiece and Camera Focus, Full metal Design, Bottom Thread, Brass Compression |
| Item Weight | 47 g |
| Manufacturer | SVBONY |
| Manufacturer Part Number | FW9118B |
| Model Number | FUSW9118B |
| Mount | 1.25 inches mount |
| Number of Items | 1 |
| Objective Lens Diameter | 7 centimeters |
| Optical Tube Length | 7 centimeters |
| Optical-Tube Length | 7 centimeters |
| Product Dimensions | 4"D x 2"W x 2"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 |

## Product Details

- **Brand:** SVBONY
- **Compatible Devices:** Telescope, Camera, Filter
- **Eye Piece Lens Description:** Plossl
- **Finderscope:** Reflex
- **Focus Type:** Manual Focus
- **Item Weight:** 47 g
- **Objective Lens Diameter:** 7 centimeters
- **Optical Tube Length:** 7 centimeters
- **Product Dimensions:** 4"D x 2"W x 2"H
- **Telescope Mount Description:** 1.25 inches mount

## Images

![SVBONY SV157 1.25” Telescope Extension Tube Optical Length 40mm Total 70mm - Image 1](https://m.media-amazon.com/images/I/51TcAA+X2EL.jpg)
![SVBONY SV157 1.25” Telescope Extension Tube Optical Length 40mm Total 70mm - Image 2](https://m.media-amazon.com/images/I/61Tzw9s80nL.jpg)
![SVBONY SV157 1.25” Telescope Extension Tube Optical Length 40mm Total 70mm - Image 3](https://m.media-amazon.com/images/I/51AN4yBDTxL.jpg)
![SVBONY SV157 1.25” Telescope Extension Tube Optical Length 40mm Total 70mm - Image 4](https://m.media-amazon.com/images/I/61qZBPyDGzL.jpg)
![SVBONY SV157 1.25” Telescope Extension Tube Optical Length 40mm Total 70mm - Image 5](https://m.media-amazon.com/images/I/61gslkrZOjL.jpg)

## Available Options

This product comes in different **Size** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ great
*by C***D on August 31, 2026*

very good well build

### ⭐⭐⭐⭐⭐ Great product
*by A***O on February 11, 2024*

This extension tube has standard 1.25" diameter threads to attach filters or other components. I use this with a 0.5x focal reducer attached to the end, plus a light pollution filter. The threads seem high quality. This is a nice long tube that allows me to attain proper back focus for the reducer. I attached an image of how it fits into my setup -- the camera goes into the extension tube at the correct depth, and the extension tube + reducer + filter goes into the eyepiece holder, connected to the visual back. (I plan to test this without the diagonal as well, which should work theoretically). The collar of the extension tube holding the camera in place is secure and I didn't have any issues with it moving during my captures. I'm able to achieve perfect focus (using Bahtinov mask) from 0.5x to 0.33x reduction with no noticeable star aberrations. (Telescope is Celestron 8", camera is QHY5iii715C, and the focal reducer is from Apertura.)

### ⭐⭐⭐⭐ It is what I wanted
*by M***E on September 25, 2026*

It is what I wanted

## Frequently Bought Together

- SVBONY SV157 Extension Tube 1.25 inch Optical Length 40mm Total Length 70mm Extension Tube for Telescope (70mm)
- SVBONY 0.5X Focal Reducer - 1.25 inches Fully Multi Coated for Telescope Eyepiece Photography and Observing

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**Shop now:** [https://www.desertcart.hr/products/191746469-svbony-sv157-1-25-telescope-extension-tube-optical-length-40mm](https://www.desertcart.hr/products/191746469-svbony-sv157-1-25-telescope-extension-tube-optical-length-40mm)

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*Product available on Desertcart Croatia*
*Store origin: HR*
*Last updated: 2026-10-09*