--- product_id: 550039742 title: "SVBONY SV181 Rack Telescope Focuser 1.25 inch,Reflector Telescope Focuser" brand: "svbony" price: "$136.97" currency: USD in_stock: true reviews_count: 5 category: "Svbony" url: https://www.desertcart.us/products/550039742-svbony-sv181-rack-telescope-focuser-1-25-inch-reflector-telescope store_origin: US region: United States of America --- # Dust cover extends lifespan 65mm precise focuser travel Brass ring protects eyepiece SVBONY SV181 Rack Telescope Focuser 1.25 inch,Reflector Telescope Focuser **Brand:** svbony **Price:** $136.97 **Availability:** ✅ In Stock ## Summary > 🔭 Upgrade your focus, upgrade your universe! ## Quick Answers - **What is this?** SVBONY SV181 Rack Telescope Focuser 1.25 inch,Reflector Telescope Focuser by svbony - **How much does it cost?** $136.97 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/550039742-svbony-sv181-rack-telescope-focuser-1-25-inch-reflector-telescope) ## 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 - • **Dust-Proof Design:** Includes 1.25" dust cover to keep your focuser pristine and performance-ready - • **Durable Brass Ring Grip:** Protects your 1.25" eyepiece from scratches while ensuring a secure fit - • **Pinpoint Precision Focus:** Smooth 65mm rack & pinion travel for razor-sharp views at any magnification - • **Anti-Reflection Threading:** Fully threaded interior minimizes stray light for clearer, contrast-rich images - • **Universal Newtonian Upgrade:** Perfectly engineered for 114mm & 150mm reflector telescopes to elevate your stargazing game ## Overview The SVBONY SV181 Rack & Pinion Focuser is a precision 1.25-inch focuser designed for 114mm and 150mm Newtonian reflector telescopes. Featuring a smooth 65mm travel with fine gear adjustment, a protective brass ring to prevent eyepiece damage, and an anti-reflective fully threaded interior, it ensures sharp, high-contrast views. The included dust cover extends equipment life, making it a durable, professional-grade upgrade for serious amateur astronomers. ## Description Do you have focusing problems for your telescope? Do you want to give your reflector an accurate focuser? SVBONY SV181 Rack & Pinion Focuser for Newtonian reflector is coming! 65mm Focusing Stroke Roller-bearing design provides zero image-shift through focusing range easily achieve the sharpest focus through a telescope even at high magnifications For 114mm and 150mm Newtonian Reflector Telescopes This particular curved base focuser is made for Newtonian style reflectors and would not be ideal on Maksutov or Smidt Cassigrains 1.25inches Inner Diameter Smooth accurate for reflector telescopes accepts 1.25in eyepieces; Comes with a dust plug to protect the focuser from dust and moisture when no in use Specifications: Focuser Type: Rack Pinion Design The focuser tube: 105mm Focuser Travel : 65mm Eyepiece adapter : 31.75mm Material: Metal Compatibility: Suitable for 114mm and 150mm Newtonian reflector telescope Net weight: 410g Package Includes: 1x SV181 1.25" R&P Reflector Style Focuser 1 x M4 Screw 1 x M6 Screw Review: Muy buena calidad y costo del producto - Este soporte lo ocupe en un telescopio que fabrique y gracias a la cremallera puedo hacer un mejor enfoque, les comparto una foto la Luna Review: Very well built at least when compared to cheap bushnell stock focuser - Bought this because i wanted an upgraded focuser for my cheap bushnell 4.5" newt. If you are looking to do the same i would absolutely recommend it... but you will have to be a little handy, i didn't check the focuser tube diameter itself on my current scope and it was 41mm as was the whole in the telescope tube. The focuser tube on the SVBony focuser is 46.4mm i believe and of course did not fit. However if u have a large step drill bit or some sharp tin snips you will easily be able to enlarge the whole and it fits perfectly. Also as mentioned in previous comment the mounting of the actual focuser to the telescope will likely require some shims as its sized for 6" scope i believe. I also had to modify handle to attach motor focuser but was easily done. Overall great Quality all metal (except tiny plastic shim) and no wobble in the focuser tube. I collimated it after installation which was almost pointless with original focuser and works perfect. ## Features - Smooth SV181 Rack and Pinion Focuser for reflector telescopes accepts 1.25inches eyepieces - The gear can be fine tuning; You can adjust the focal length by the gear; Focuser Travel is 65mm; and fine tuning more accuracy - Brass ring design; Internal brass ring that the set screw hits to hold your 1.25inches eyepiece inside for eliminates marks on your eyepiece barrel - Internal matting design; the inside of the item fully threaded to minimize reflections - Come with 1.25 inch dust cover; It can protect your equipment from dust; Thereby extending the service life of the equipment ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B08HX1MWMM | | Best Sellers Rank | #642,222 in Electronics ( See Top 100 in Electronics ) #65 in Telescope Reflectors | | Brand | SVBONY | | Brand Name | SVBONY | | Coating | StarBright XLT | | Compatible Devices | Newtonian reflector telescope - 114mm, Newtonian reflector telescope - 150mm | | Customer Reviews | 4.3 out of 5 stars 106 Reviews | | Eye Piece Lens Description | Plossl | | Field Of View | 0.95 Degrees | | Finderscope | Reflex | | Focal Length Description | 65 millimeters | | Focus Type | Manual Focus | | Item Dimensions D x W x H | 14.5D x 11.4W x 10.4H Centimeters | | Item Weight | 410 Grams | | Manufacturer | SVBONY | | Manufacturer Part Number | FCAW9140A | | Model Name | SV181 | | Model Number | FCAW9140A | | Mount | 1.25 inches mount | | Objective Lens Diameter | 114 Millimeters | | Optical Tube Length | 1.25 Inches | | Optical-Tube Length | 1.25 Inches | | Power Source | Manual | | Product Features | Adjustable metal gear focuser, smooth focus with dual knobs, built-in brass ring, fully threaded interior | | Telescope Mount Description | 1.25 inches mount | | Unit Count | 1.0 Count | ## Product Details - **Brand:** SVBONY - **Optical Tube Length:** 1.25 Inches - **Eye Piece Lens Description:** Plossl - **Objective Lens Diameter:** 114 Millimeters - **Focus Type:** Manual Focus ## Images ![SVBONY SV181 Rack Telescope Focuser 1.25 inch,Reflector Telescope Focuser - Image 1](https://m.media-amazon.com/images/I/61EQY4EPQtL.jpg) ![SVBONY SV181 Rack Telescope Focuser 1.25 inch,Reflector Telescope Focuser - Image 2](https://m.media-amazon.com/images/I/71RvNeam0JL.jpg) ![SVBONY SV181 Rack Telescope Focuser 1.25 inch,Reflector Telescope Focuser - Image 3](https://m.media-amazon.com/images/I/714IMvOSWLL.jpg) ![SVBONY SV181 Rack Telescope Focuser 1.25 inch,Reflector Telescope Focuser - Image 4](https://m.media-amazon.com/images/I/61bJksdGKhL.jpg) ![SVBONY SV181 Rack Telescope Focuser 1.25 inch,Reflector Telescope Focuser - Image 5](https://m.media-amazon.com/images/I/71kqNADttJL.jpg) ## Questions & Answers **Q: Will the sv181 fit on an orion xt6?** A: thanks so much for your question. Yes, this SVBONY SV181 Rack and Pinion Focuser is suitable for orion xt6. **Q: What is the width of the rack itself? I know the length is 64mm but I need to know the width** A: Dear customer , Thanks for your contact. 74mm. 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: How can I add a 1 1/4 inch UHC filter at the bottom of the threaded eyepiece barrel?** A: thanks for your question, This SVBONY SV181 Rack and Pinion Focuser does not have filter threads and cannot attach filters directly, you can add filters to the bottom of your eyepiece when inserting it. **Q: Will this fit on a celestron 130 slt?** A: thanks for your question. Yes, the SVBONY SV181 Rack and Pinion Focuser fit on a celestron 130 slt. If any, please concact us via amazon message, we are always here for you. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Muy buena calidad y costo del producto *by L***O on 9 April 2023* Este soporte lo ocupe en un telescopio que fabrique y gracias a la cremallera puedo hacer un mejor enfoque, les comparto una foto la Luna ### ⭐⭐⭐⭐⭐ Very well built at least when compared to cheap bushnell stock focuser *by M***T on 26 January 2021* Bought this because i wanted an upgraded focuser for my cheap bushnell 4.5" newt. If you are looking to do the same i would absolutely recommend it... but you will have to be a little handy, i didn't check the focuser tube diameter itself on my current scope and it was 41mm as was the whole in the telescope tube. The focuser tube on the SVBony focuser is 46.4mm i believe and of course did not fit. However if u have a large step drill bit or some sharp tin snips you will easily be able to enlarge the whole and it fits perfectly. Also as mentioned in previous comment the mounting of the actual focuser to the telescope will likely require some shims as its sized for 6" scope i believe. I also had to modify handle to attach motor focuser but was easily done. Overall great Quality all metal (except tiny plastic shim) and no wobble in the focuser tube. I collimated it after installation which was almost pointless with original focuser and works perfect. ### ⭐⭐⭐⭐⭐ GREAT focuser *by M***S on 5 July 2021* I replaced the focuser on my Orion 6" dob telescope. Researching I learned that all reflector scopes 6" and smaller share the same cheap sloppy focuser and this is the only one I could find to replace the cheapy. I did have to enlarge the drawtube hole with a rotary tool and drill 4 small holes to mount the base. I am mechanicaly inclined so that was no problem for me. The SVBony focuser is a qaulity unit consisting of a metal base and a far superior drawtube that fits tightly in the base and rides on nylon or delrin guide strips which makes its travel very smooth. The strips also take out all of the drawtube wobble and sloppy fit of the stock plastic focuser. The rack and pinion gears are helical cut and have much less gear backlash than the stock focuser. You cannot beat this focuser for the price period! This focuser is built every bit as good as the replacements sold costing over twice as much as this focuser. This focuser was my introduction to SVbony products and since I have purchased some of there eyepieces as well and boy was I surprised! Very good products indeed. I have no concerns buying SVbony parts and will continue doing so when they have something that I want. Thank you SVbony for bringing your products to the market. You have earned a loyal customer. ## Frequently Bought Together - SVBONY SV181 Rack and Pinion Focuser, 1.25 inch, Newtonian Reflector Focuser for Newtonian Reflector Telescope - SVBONY Telescope Lens 23mm Telescopes Eyepieces Wide Angle 62 Degree Aspheric Eyepiece Fully Coated Lens for 1.25 inches Astronomic Telescopes - Astronomical Telescope Accessories D114F900mm with Short-axis Secondary Mirror 25mm, Newton Reflector Spherical Mirror --- ## 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.us/products/550039742-svbony-sv181-rack-telescope-focuser-1-25-inch-reflector-telescope](https://www.desertcart.us/products/550039742-svbony-sv181-rack-telescope-focuser-1-25-inch-reflector-telescope) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-08-08*