--- product_id: 38932454 title: "Bahtinov Focusing Mask for Astronomical Telescopes - FM60mm" brand: "astromania" price: "€ 41.82" currency: EUR in_stock: true reviews_count: 13 category: "Astromania" url: https://www.desertcart.hr/products/38932454-bahtinov-focusing-mask-for-astronomical-telescopes-fm60mm store_origin: HR region: Croatia --- # Adjustable fit for 65-100mm telescope tubes Precision laser-cut plexiglass, 2mm thick Non-scratching silicon sleeves on mounting posts Bahtinov Focusing Mask for Astronomical Telescopes - FM60mm **Brand:** astromania **Price:** € 41.82 **Availability:** βœ… In Stock ## Summary > πŸ”­ Focus like a pro, see like never before! ## Quick Answers - **What is this?** Bahtinov Focusing Mask for Astronomical Telescopes - FM60mm by astromania - **How much does it cost?** € 41.82 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/38932454-bahtinov-focusing-mask-for-astronomical-telescopes-fm60mm) ## Best For - astromania enthusiasts ## Why This Product - Trusted astromania brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Telescope-Safe Mounting:** Three metal posts with soft silicon sleeves ensure a firm grip without scratching your prized optics. - β€’ **Universal Compatibility:** Fits a wide range of telescopes (65-100mm OD) with adjustable mountingβ€”perfect for both reflectors and refractors. - β€’ **Durable & Cold-Resistant:** Crafted from reinforced plexiglass that stays stiff and crack-free even in freezing conditions. - β€’ **Effortless Precision Focus:** Mathematically engineered Bahtinov design eliminates guesswork for razor-sharp telescope focus every time. - β€’ **Quick Setup & Versatile Mounting:** Mount inside or outside the drawtube with brass screws capped in soft plastic for damage-free installation. ## Overview The Astromania Bahtinov Mask FM60mm is a precision laser-cut focusing mask designed for telescopes with tube diameters from 65mm to 100mm. Made from durable 2mm thick plexiglass, it offers a mathematically precise focusing aid that works flawlessly with both reflector and refractor telescopes. Featuring adjustable mounting with non-scratching silicon sleeves and versatile brass screw placement, it ensures a secure, damage-free fit. Trusted by astronomy enthusiasts for quick, accurate focusing even in challenging seeing conditions. ## Description desertcart.com : Astromania Bahtinov Mask Focusing Mask for Telescopes - FM60mm for a Tube Outer Diameter (OD) from 65mm-100mm - can be Mounted with The Brass Screws Inside or Outside The drawtube : Electronics Review: It works. Buy it. - Worked as it should. Review: Excellent value for the money. - I bought this with my own money and received nothing from the company that makes this Bahtinov Mask. This is a beautiful piece of kit this Bahtinov Mask. Build quality is good at .082" thickness with perfectly clean edges. You would have to abuse this to crack it. I see a review that says the screws don't fit the slots and wonder if someone did not realize that this is a nut/screw set up and did not separate them as mine fit perfectly with screw on one side going through to nut on opposite side I also read a review that it did not fit someone's scope, on my Celestron 80mm GTL refractor I measured the outside of the lens shade which was 100mm and the inside was 90mm, I wanted to mount this on the outside so I ordered the Bahtinov Mask that would fit the 100mm requirement. It fits perfectly and although I have not used it yet I can see that it should work perfectly. This is no Williams Optics clear Bahtinov Mask for sure but it also isn't $60.00. I have no doubt it will work fine. ## Features - Bahtinov masks take the guesswork out of focusing and even get over the seeing conditions as it is a mathematical type approach to the task; the best focus for your telescope quickly and easily - Suitable for use on all types of telescope; they are made from precision laser cut enforced plexiglass that is stiff and long lasting; they will never be brittle in the cold; unlike some other masks which are made from normal plastics - The masks grip the telescope tube gently but firmly with three metal posts which have non-scratching silicon sleeves to protect valued telescope surface; mask remains centered since 3-post mounting; while fitting a wider range of telescopes - Made from 2mm thick laser cut plexiglass and securing screws are capped with soft plastic so that do not damage telescope; They have adjustment latitude of about 65-100mm that adjustable to fit optical tubes unlike masks which only fit one telescope - Please be assured these focusing masks will work excellently for both reflectors and refractors with whatever focal length; all you need to do is to measure telescope tube size and choose right size of mask contact us if not sure where to measure ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B01MEG5D8W | | Age Range Description | Adult | | Best Sellers Rank | #10 in Telescope Eyepieces | | Brand | Astromania | | Coating | UV-Protective, Scratch-Resistant | | Compatible Devices | Camera, DSLR, Webcam | | Customer Reviews | 4.4 4.4 out of 5 stars (675) | | Exit Pupil Diameter | 3 Millimeters | | Eye Piece Lens Description | NO | | Focus Type | Center Focus | | Item Weight | 1.1 Ounces | | Manufacturer | Astromania | | Manufacturer Part Number | SKU_AM_BFM60 | | Model Number | SKU_AM_BFM60 | | Mount | Equatorial Mount | | Objective Lens Diameter | 100 Millimeters | | Optical-Tube Length | 60 Millimeters | ## Product Details - **Brand:** Astromania - **Compatible Devices:** Camera, DSLR, Webcam - **Exit Pupil:** 3 Millimeters - **Eye Piece Lens Description:** NO - **Focus Type:** Center Focus - **Item Weight:** 1.1 Ounces - **Lens Coating Description:** UV-Protective, Scratch-Resistant - **Objective Lens Diameter:** 100 Millimeters - **Optical Tube Length:** 60 Millimeters - **Telescope Mount Description:** Equatorial Mount ## Images ![Bahtinov Focusing Mask for Astronomical Telescopes - FM60mm - Image 1](https://m.media-amazon.com/images/I/618gIyeZNML.jpg) ## Available Options This product comes in different **Size** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ It works. Buy it. *by J***M on January 28, 2026* Worked as it should. ### ⭐⭐⭐⭐⭐ Excellent value for the money. *by S***R on April 2, 2025* I bought this with my own money and received nothing from the company that makes this Bahtinov Mask. This is a beautiful piece of kit this Bahtinov Mask. Build quality is good at .082" thickness with perfectly clean edges. You would have to abuse this to crack it. I see a review that says the screws don't fit the slots and wonder if someone did not realize that this is a nut/screw set up and did not separate them as mine fit perfectly with screw on one side going through to nut on opposite side I also read a review that it did not fit someone's scope, on my Celestron 80mm GTL refractor I measured the outside of the lens shade which was 100mm and the inside was 90mm, I wanted to mount this on the outside so I ordered the Bahtinov Mask that would fit the 100mm requirement. It fits perfectly and although I have not used it yet I can see that it should work perfectly. This is no Williams Optics clear Bahtinov Mask for sure but it also isn't $60.00. I have no doubt it will work fine. ### ⭐⭐⭐⭐ Good looking but fragile and brittle. *by K***R on May 7, 2017* I have ordered this item twice. The first time it arrived broken in several places. It is a quite thin piece of material, and appears brittle. The second order arrived intact, but like the first order, was missing the "brass mounting (S)crews". SIC. Two incomplete and one broken order is too much hassle. I'll try someone else. Follow up. It appears the breakage and the lack of mounting screws was the fault of Amazon. Poor packaging. The seller was very cooperative in mailing me the mounting screws. I have used this mask several times now, and it produces a crisp, sharp focusing pattern that is easy to use and has improved my planetary and deep sky imaging. I still feel it is a bit thin, and I handle it with care lest it fall from my scope and crack. ## Frequently Bought Together - Astromania Bahtinov Mask Focusing Mask for Telescopes - FM60mm for a Tube Outer Diameter (OD) from 65mm-100mm - can be Mounted with The Brass Screws Inside or Outside The drawtube - NEEWER USB Lens Heater, 12"/300mm Lens Warmer for DSLR Camera and Telescope, 3 Temperature Regulator Settings, Dew Heater Strip Prevents Dew, Fog & Condensation for Telescope Camera Astrophotography - Lens Warmer with Cold Flexible Cable Down to -25℃, 350mm Dew Heater Strip Prevents Lens from Dew, Fog and Condensation for Astrophotography, Lens Heater Compatible w/ Telescope and Camera in 4.26" --- ## 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.hr/products/38932454-bahtinov-focusing-mask-for-astronomical-telescopes-fm60mm](https://www.desertcart.hr/products/38932454-bahtinov-focusing-mask-for-astronomical-telescopes-fm60mm) --- *Product available on Desertcart Croatia* *Store origin: HR* *Last updated: 2026-08-12*