Akozon Bahtinov Focusing Mask Telescope Focusing Mask Acrylic Deep Space Fishbone Plate 100-140mm for Reflector Refractor Astrophotography

• 【Perfect Focus】: The focusing fishbone plate overcomes the visual condition and can quickly and easily provide perfect focus for your telescope. At the same time, it can effectively protect the surface of the telescope.
• 【3 Metal Posts】: Telescope Focusing Mask 3-screw sleeve with non-slip silicone cover is used to secure the telescope and prevent slipping while keeping the tube perfectly centered. Improved shooting stability.
• 【Applicable】: Telescope fishbone plate is suitable for different telescopes, such as mirrors, refractors, for Dobsonians, for Mak Cas, for SCT, you just need to measure the size of the telescope tube. The outer diameter of the mask supports the telescope objective lens in the range of 100‑140mm (there is a 1‑2mm error in manual measurement).
• 【Light and Portable】: The acrylic telescope focusing mask is light in weight, will not destroy the balance of the telescope, and is guaranteed to be centered during installation. Easy to carry and use anytime.
• 【High Quality Material】: The telescope focusing mask is made of high quality acrylic, which is durable, reliable, not easy to break and damage, and has a long service life.

Specification: Item Type: Telescope Focus Mask Material: Acrylic Thickness: Approx. 2mm / 0.08in Color: As Pictures Shown Weight: Approx. 38g / 1.3oz The Outer Diameter Size Range of the Telescope Objective Lens Is Supported: Approx. 100-140mm / 3.9-5.5in (there is an error of 1-2mm in manual measurement) Package List: 1 x Bahtinov Mask 3 x Mounting Accessories