Bahtinov Focusing Mask For Telescopes FM100mm Fits Tube OD 105mm To 150mm Works Like A Charm On Reflectors And Refractors 2mm Thick ABS Construction With Secure Screws Easy Setup For Precise Astrophotography Focusing
✔️ Single unit, adjustable to 105-150 mm tubes, 2 mm ABS, secure mounting
This focusing mask is designed to help achieve precise focus on telescopes. It's compatible with both reflectors and refractors and commonly used in astrophotography to lock in focus quickly.
✅ 2 mm thick laser-cut ABS construction
✅ Adjustable to 105-150 mm tube OD
✅ Three metal posts with non-scratch silicone sleeves
✅ Securing screws capped with soft plastic to prevent damage
✅ Enforced plexiglass material resists cold brittleness
✅ Suitable for reflectors and refractors
💡 What is a handy focusing mask used for in astrophotography and how does it help you lock focus? This handy tool helps remove guessing and speeds up autofocus in varying conditions.
- Improves focusing precision on star fields and deep-sky targets
- Works with both reflectors and refractors for many setups
- Simple to install and adjust, even in cold, clear nights