Bahtinov Focusing Mask for Telescopes – Upgraded Glass Star Pattern with Durable Aluminum Alloy Frame – Compact Design with Hex Key Lock Screws

Product Features **High-Transparency Glass** – Provides clear star diffraction spikes for accurate telescope focusing. **Engraved Star Pattern** – Ensures sharper, more reliable focus for astrophotography. **Aluminum Alloy Frame** – Strong, lightweight, and finished with surface oxidation for durability. **Compact & Portable** – Only 2.24" (57mm) in diameter, 0.87" (22mm) in height, and 1 oz (28g) in weight, easy to carry for stargazing trips. **Secure Locking System** – Three evenly spaced screws with included hex key provide a firm, scratch-free fit. **Easy Installation** – Mounts directly by removing the small plastic cap on the telescope’s objective cover. **Wide Compatibility** – Fits telescope objective covers with an inner diameter of 1.73" to 2.00" (44mm–51mm), making it versatile across setups. **Perfect for Astrophotography** – Designed to deliver sharp, precise focus for stars, planets, and deep-sky imaging.

• **Precise Focusing Aid** – High-transparency glass with engraved star pattern delivers sharp diffraction spikes, helping you achieve fast and accurate telescope focus.
• **Premium Frame Build** – Lightweight aluminum alloy frame with an oxidized finish offers strength, durability, and a professional appearance.
• **Compact & Lightweight** – With an outer diameter of 2.24" (57mm), a height of 0.87" (22mm), and a weight of only 1 oz (28g), this focusing mask is easy to carry for outdoor astrophotography.
• **Secure Mounting System** – Three evenly spaced lock screws (hex key included) ensure a firm, scratch-free fit without removing the entire lens cap.
• **Wide Telescope Compatibility** – Designed to fit objective lens covers with an inner diameter of 1.73" to 2.00" (44mm–51mm), making it versatile across different telescope setups.