مميزات خاصة

PRECISE FOCUSING WITH DIFFRACTION PATTERNS: This Bahtinov mask uses the proven diffraction‑pattern method to take the guesswork out of focusing. When pointed at a bright star, the fishbone slits produce three pairs of rays that converge into a central alignment once perfect focus is achieved—much faster and more repeatable than relying on visual judgment alone.
UNIVERSAL 63 TO 89MM COMPATIBILITY: Designed to fit telescopes with an outer diameter between 63mm and 89mm, this telescope focusing mask covers a broad range of popular reflector, refractor, Dobsonian, Mak‑Cas, and model. The three‑point clamp system allows it to center on different tube sizes without needing separate masks for each scope.
SECURE THREE METAL COLUMN CLAMP: Three brass‑tipped metal columns extend from the mask and grip the telescope tube firmly. Rubber pads on the contact points protect the finish of your telescope while preventing the focus fishbone from sliding or rotating, even when the tube is pointed nearly straight up.
SUITABLE FOR ALL TELESCOPE TYPES: Whether you run a refractor, a reflector, a Dobsonian, or a compound SCT/Mak‑Cas, this telescope Bahtinov plate works without any adapters. Simply adjust the three bolts to match your tube diameter and start focusing in seconds.
LIGHTWEIGHT 1MM ALUMINUM ALLOY: Cut from a single sheet of aluminum alloy just 1mm thick, this astronomical focusing part weighs only 47 grams. It adds virtually no weight to the front of your telescope, preserving balance and eliminating the need to re‑adjust counterweights before a session.

وصف

1. Universal Compatibility: Suitable for all types of telescopes including reflectors, refractors, for Dobsonians, for Mak Cas, and for SCT, fitting telescopes with an outer diameter of 63 to 89mm. The focusing mask can be easily installed on any telescope with 3 bolts.
2. Precise Focusing: The Bahtinov mask eliminates guesswork during focusing, overcoming visual conditions to quickly and easily achieve optimal focus for your telescope.
3. Secure Grip: Three metal columns of the mask clamp the telescope to prevent slipping while keeping the mask perfectly centered. The 3 column design allows for central alignment and compatibility with a wider range of telescopes.
4. Diffraction Patterns: The focus fishbone acts as a set of artificial "trusses." As light passes through the fishbone plate, it diffracts in 3 different directions, creating 3 pairs of "rays." With focus adjustments, the ray patterns move until the 3 sets of rays align, indicating proper focus.
5. Lightweight and Durable Aluminum Alloy: The telescope focusing mask features a thin and sturdy design made of 1mm thick aluminum alloy material, lightweight and durable to maintain balance without damaging the telescope.

Spec:
Item Type: Telescope Focusing Mask
Material: Brass, Aluminum Alloy, Rubber
Weight: Approx. 47g/1.7oz

PackageList:
1 x Telescope Focusing Mask

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Bahtinov Mask Focusing Mask for Telescopes, Focus Fishbone Astronomical Part for 63 to 89mm Outer Diameter Reflector Refractor Dobsonian 3 Bolt Clamp

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