--- product_id: 95962643 title: "Alstar M48 Extension Tube Kit for 2 Inch Focuser of Telescope(5/10/20/30mm)" brand: "a alstar" price: "38122CFA" currency: XOF in_stock: true category: "A Alstar" url: https://www.desertcart.sn/products/95962643-alstar-m48-extension-tube-kit-for-2-inch-focuser-telescope store_origin: SN region: Senegal --- # 4 extension lengths (5,10,20,30mm) M48x0.75 threaded both sides Anodized aluminum alloy durability Alstar M48 Extension Tube Kit for 2 Inch Focuser of Telescope(5/10/20/30mm) **Brand:** a alstar **Price:** 38122CFA **Availability:** βœ… In Stock ## Summary > 🌌 Unlock stellar focus with Alstar’s precision extension kit! ## Quick Answers - **What is this?** Alstar M48 Extension Tube Kit for 2 Inch Focuser of Telescope(5/10/20/30mm) by a alstar - **How much does it cost?** 38122CFA with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.sn](https://www.desertcart.sn/products/95962643-alstar-m48-extension-tube-kit-for-2-inch-focuser-telescope) ## 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 - β€’ **Stray Light Slayer:** Internal threading design cuts stray light, delivering crystal-clear celestial shots. - β€’ **Pro-Grade Focus Control:** Solve tricky focusing issues effortlessly and elevate your night sky imaging game. - β€’ **Universal Compatibility:** Seamlessly fits cameras, eyepieces, reducers, and field flatteners with M48 threads. - β€’ **Featherweight Durability:** Crafted from anodized aluminum alloyβ€”ultra-light at just 80g, built to last. - β€’ **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 desertcart.com : Alstar M48 Extension Tube Kit for 2 Inch Focuser of Telescope(5/10/20/30mm) | M48x0.75 on Both Sides, Improve Focusing, Aluminium Alloy, Freely Combinable M48 Extension Tube, Telescope Photo Adapter : Electronics ## 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 | #136 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 20 Reviews | | Finderscope | Reflex | | Focal Length Description | 20 millimeters | | Focus Type | Manual Focus | | Item Highlight | M48x0.75 on Both Sides, Improve Focusing, Aluminium Alloy, Freely Combinable M48 Extension Tube, Telescope Photo Adapter | | 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 | | Optical Tube Length Measurement | 5 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 M48 Extension Tube Kit for 2 Inch Focuser of Telescope(5/10/20/30mm) - Image 1](https://m.media-amazon.com/images/I/71Oo+GnNWyL.jpg) ![Alstar M48 Extension Tube Kit for 2 Inch Focuser of Telescope(5/10/20/30mm) - Image 2](https://m.media-amazon.com/images/I/71Rg2mcY2BL.jpg) ![Alstar M48 Extension Tube Kit for 2 Inch Focuser of Telescope(5/10/20/30mm) - Image 3](https://m.media-amazon.com/images/I/715TLJKtGcL.jpg) ![Alstar M48 Extension Tube Kit for 2 Inch Focuser of Telescope(5/10/20/30mm) - Image 4](https://m.media-amazon.com/images/I/8124FYxg7cL.jpg) ![Alstar M48 Extension Tube Kit for 2 Inch Focuser of Telescope(5/10/20/30mm) - Image 5](https://m.media-amazon.com/images/I/81eeXOGPXCL.jpg) ## Available Options This product comes in different **Size** options. --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.sn/products/95962643-alstar-m48-extension-tube-kit-for-2-inch-focuser-telescope](https://www.desertcart.sn/products/95962643-alstar-m48-extension-tube-kit-for-2-inch-focuser-telescope) --- *Product available on Desertcart Senegal* *Store origin: SN* *Last updated: 2026-10-27*