Telescope Focusing Mask, Aluminum Alloy Focusing Fishbone Plate for 104 to 146mm Telescopes, 3 Metal Posts, Precise Focus Tool for Astrophotography and Stargazers

Description

• Wide Telescope FitFocusing fishbone plate fits telescope outer diameters from 104 to 146mm. Compatible with Dobsonian Mak Cas and telescopes for flexible use across setups.
• Precise Star FocusTelescope focusing mask creates 3 pairs of diffraction spikes to help find focus faster. Reduces guesswork during astrophotography and supports clearer star image alignment.
• Astrophotography UseDesigned for stargazers using telescopes in night sky observation and imaging. Helpful when adjusting focus under changing visual conditions to capture clearer star details.
• Stable CenteringThree metal posts clamp the mask in position to help prevent shifting during use. Supports centered placement on the telescope for more consistent focusing results.
• Aluminum Alloy BuildMade of aluminum alloy with a 1mm thickness for a lightweight structure. Adds minimal load to the telescope while remaining practical for repeated observation sessions.

1. Universal Compatibility: Designed to work with all types of telescopes, reflectors, refractors, for Dobsonian, for MakCas, and for . It fits on astronomy telescopes with an outer diameter of 104146mm and can be easily attached to any telescope with the 3 bolt setup.
2. Precise Focusing: Eliminate guesswork in focusing with the telescope focusing mask. It overcomes visual conditions and facilitates fast and easy optimal focus for your telescope.
3. Secure and Centered Positioning: The 3 metal posts clamp onto the telescope, preventing slipping and keeping the mask perfectly centered. The 3 post mount allows the mask to stay centered while accommodating a wide range of telescopes.
4. Efficient Star Focusing: As light passes through the focusing mask, it diffracts in 3 different directions, creating 3 pairs of star spikes. The pattern of star spikes shifts as the telescope's focus adjusts, indicating star focus when the 3 spikes align.
5. Lightweight, Resilient Design: The focusing plate is crafted using lightweight aluminum alloy and is just 1mm thick. It ensures the balance of the telescope isn't disrupted and guarantees durability and longevity.

Specification:
Item Type: Telescope Focusing Plate
Material: Brass + Aluminum Alloy + Rubber

packing list:
1 x Focusing Plate

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