Bahtinov Mask For Telescopes 60 To 90mm Acrylic Fishbone Focusing Plate For Nail Focus In Astrophotography Easy Focus With Brass Screws Inside Or Outside The Drawtube Fits Dobsonians Refractors

Telescopes Bahtinov Mask 60-90mm, Acrylic Focus Plate ✔️ 1 piece mask with 3 mounting posts and silicone shields

This Bahtinov mask is a lightweight acrylic focusing aid designed for 60-90mm telescope tubes. It fits Dobsonians, refractors, and Mak-Cass styles, helping you lock in precise focus quickly for astrophotography.

✅ Material: Acrylic, 2mm thickness
✅ Outer diameter range: 60-90mm tube support (2.4-3.5in)
✅ Weight: approx 21g
✅ Three mounting posts with silicone covers to prevent slip
✅ Includes 3 mounting accessories for installation

💡 What is a Bahtinov mask and how does it help with telescope focusing?

Bahtinov masks provide a diffraction pattern that helps you dial in focus quickly for sharp stars in astrophotography.

- precise focus aid using diffraction patterns
- compatible with 60-90mm tubes and other refractors
- lightweight with a 3-post mounting system for centered alignment
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