---
product_id: 95962643
title: "Alstar Astronomical 2 inch M48-extension Tube Kit for Cameras and eyepieces - Length 5mm 10mm 20mm 30mm - M48x0.75 on Both Sides"
brand: "a alstar"
price: "193.70 DT"
currency: TND
in_stock: true
reviews_count: 9
category: "A Alstar"
url: https://www.desertcart.tn/products/95962643-alstar-astronomical-2-inch-m48-extension-tube-kit-for-cameras
store_origin: TN
region: Tunisia
---

# 4 extension lengths (5,10,20,30mm) M48x0.75 threaded both sides Anodized aluminum alloy durability Alstar Astronomical 2 inch M48-extension Tube Kit for Cameras and eyepieces - Length 5mm 10mm 20mm 30mm - M48x0.75 on Both Sides

**Brand:** a alstar
**Price:** 193.70 DT
**Availability:** ✅ In Stock

## Summary

> 🌌 Unlock stellar focus with Alstar’s precision extension kit!

## Quick Answers

- **What is this?** Alstar Astronomical 2 inch M48-extension Tube Kit for Cameras and eyepieces - Length 5mm 10mm 20mm 30mm - M48x0.75 on Both Sides by a alstar
- **How much does it cost?** 193.70 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/95962643-alstar-astronomical-2-inch-m48-extension-tube-kit-for-cameras)

## Best For

- a alstar enthusiasts

## Why This Product

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

## Key Features

- • **Stray Light Slayer:** Internal threading design cuts stray light, delivering crystal-clear celestial shots.
- • **Pro-Grade Focus Control:** Solve tricky focusing issues effortlessly and elevate your night sky imaging game.
- • **Universal Compatibility:** Seamlessly fits cameras, eyepieces, reducers, and field flatteners with M48 threads.
- • **Featherweight Durability:** Crafted from anodized aluminum alloy—ultra-light at just 80g, built to last.
- • **Precision Spacing Mastery:** Mix and match 5-30mm tubes for perfect astrophotography focus every time.

## Overview

The Alstar Astronomical 2-inch M48-extension Tube Kit offers four anodized aluminum tubes (5, 10, 20, 30mm) with M48x0.75 threading on both ends, enabling customizable spacing for astrophotography setups. Designed to eliminate stray light and improve focus accuracy, this lightweight (80g total) and durable kit is compatible with cameras, eyepieces, reducers, and field flatteners, making it an essential tool for professional and enthusiast astrophotographers seeking flawless celestial images.

## Description

Product description FREEDOM TO CHOOSE 5mm 10mm 20mm 30mm 5mm 8mm 10mm 20mm 30mm 5mm 8mm 10mm 30mm 8mm 10mm 20mm 30mm Aluminum Material All metal construction and anodizing aluminum process, durable for long time use, makes the product lighter and easier to carry. Inner Threaded Design Effectively reduce stray light interference, not only improve the brightness of the image, but also effectively reduce the dark edges formed. Lightweight Quality The mass of the extensiontube kit does not exceed 80g in total, making it easy to carry. Engineered for Precision Crafted from solid black-anodized aluminum for unmatched durability & a professional finish.

Review: The break off in sizes that comes with this extension kit. - I'm fairly new at astrophotography and knowing I had to have a certain mm from scope to camera is not always an easy job. I have bought two of these sets so far for my camera setup and they work great. One i use for 55mm backfocus and the 2nd for a 105mm backfocus and between the 2 kits i have just the right extension sizes. I highly recommend this kit to any astrophotographer.
Review: Good - All I needed was the skinniest one but they all look like they will work just fine.

## Features

- Improve Focusing Problem: The extension tube has a M48x0.75 interior thread and a M48x0.75 exterior thread; elegantly solves the spacing problems in astrophotography and improve a series of focusing problems
- Variable Combination: The required spacing can be achieved by combining several extenders of differing lengths; Use this extension tube for getting the correct image scale or the exact spacing required for reducers or field flatteners
- Aluminium Alloy Material: All metal construction and anodizing aluminium process; resistant for long time use
- Eliminate Extra Light: The design of the internal thread can eliminate stray light and reflected light; making the image clearer and perfect
- 100 Percent Satisfaction: If you have any question with our product; please contact us freely

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B074J7HBHJ |
| Additional Features | Variable Spacing, Stray Light Elimination, Durable Material, Wide Compatibility |
| Best Sellers Rank | #83 in Telescope Photo Adapters |
| Brand | A ALSTAR |
| Coating | Coated |
| Compatible Devices | Camera, Eyepiece, Adapters, Reducers, Field Flatteners |
| Customer Reviews | 4.8 out of 5 stars 43 Reviews |
| Finderscope | Reflex |
| Focal Length Description | 20 millimeters |
| Focus Type | Manual Focus |
| Item Weight | 2.6 Ounces |
| Manufacturer | Alstar |
| Manufacturer Part Number | SKU_AM_M48EXT5123A |
| Model Number | SKU_AM_M48EXT5123A |
| Mount | Altazimuth Mount |
| Objective Lens Diameter | 30 Millimeters |
| Telescope Mount Description | Altazimuth Mount |

## Product Details

- **Brand:** A ALSTAR
- **Objective Lens Diameter:** 30 Millimeters
- **Telescope Mount Description:** Altazimuth Mount
- **Focus Type:** Manual Focus
- **Finderscope:** Reflex
- **Item Weight:** 2.6 Ounces
- **Compatible Devices:** Camera, Eyepiece, Adapters, Reducers, Field Flatteners
- **Lens Coating Description:** Coated
- **Focal Length Description:** 20 millimeters
- **Manufacturer:** Alstar

## Images

![Alstar Astronomical 2 inch M48-extension Tube Kit for Cameras and eyepieces - Length 5mm 10mm 20mm 30mm - M48x0.75 on Both Sides - Image 1](https://m.media-amazon.com/images/I/71Oo+GnNWyL.jpg)
![Alstar Astronomical 2 inch M48-extension Tube Kit for Cameras and eyepieces - Length 5mm 10mm 20mm 30mm - M48x0.75 on Both Sides - Image 2](https://m.media-amazon.com/images/I/71Rg2mcY2BL.jpg)
![Alstar Astronomical 2 inch M48-extension Tube Kit for Cameras and eyepieces - Length 5mm 10mm 20mm 30mm - M48x0.75 on Both Sides - Image 3](https://m.media-amazon.com/images/I/715TLJKtGcL.jpg)
![Alstar Astronomical 2 inch M48-extension Tube Kit for Cameras and eyepieces - Length 5mm 10mm 20mm 30mm - M48x0.75 on Both Sides - Image 4](https://m.media-amazon.com/images/I/8124FYxg7cL.jpg)
![Alstar Astronomical 2 inch M48-extension Tube Kit for Cameras and eyepieces - Length 5mm 10mm 20mm 30mm - M48x0.75 on Both Sides - Image 5](https://m.media-amazon.com/images/I/81eeXOGPXCL.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ The break off in sizes that comes with this extension kit.
*by B***E on May 5, 2024*

I'm fairly new at astrophotography and knowing I had to have a certain mm from scope to camera is not always an easy job. I have bought two of these sets so far for my camera setup and they work great. One i use for 55mm backfocus and the 2nd for a 105mm backfocus and between the 2 kits i have just the right extension sizes. I highly recommend this kit to any astrophotographer.

### ⭐⭐⭐⭐⭐ Good
*by L***G on June 29, 2023*

All I needed was the skinniest one but they all look like they will work just fine.

### ⭐⭐⭐⭐⭐ good threads
*by R***R on October 5, 2022*

For items like this, it's all about well-machined threads, and these are good. Very pleased.

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.tn/products/95962643-alstar-astronomical-2-inch-m48-extension-tube-kit-for-cameras](https://www.desertcart.tn/products/95962643-alstar-astronomical-2-inch-m48-extension-tube-kit-for-cameras)

---

*Product available on Desertcart Tunisia*
*Store origin: TN*
*Last updated: 2026-09-23*