Bahtinov Mask for Astrophotography - Several sizes

Bahtinov Mask for Sharp Astrophotography Focus – Multiple Lens Profiles Included

Achieve razor-sharp stars with this customizable Bahtinov mask designed for astrophotography. Whether you’re shooting night skies, nebulae, or deep-sky objects, a Bahtinov mask remains one of the most reliable, beginner-friendly, and accurate focusing tools available.

This model includes several profiles for different lenses, giving you a precise and easy way to dial in perfect focus no matter which setup you use.

 Included in This Model

• Multiple Bahtinov mask profiles sized for various lenses:
  • Samyang/Rokinon 135mm f/2 ED UMC
  • Samyang/Rokinon 24mm f/1.4 ED AS IF UMC
  • Canon EF 85mm f/1.2 L II USM
  • Canon EF 35mm f/1.4 L USM
  • Canon RF 24-70 f/2.8 L IS USM
  • Canon RF 70-200 mm f/2.8 L IS USM
  • Canon RF 14-35mm f/4 L IS USM
  • Canon RF 50mm f/1.8 STM
  • Canon EF 24-70mm f/2.8 II IS US
  • Sigma Art 50mm f/1.4 DG HSM
  • Sony FE 12-24mm f/2.8 GM
  • Sony FE 20mm f/1.8 G
  • Viltrox AF 16mm f/1.8
• Printable in PLA, PETG, ABS or ASA (I suggest black) - Do not use anything larger than 0.4mm nozzle due to clearance between notches in the mask. Do take care when removing it frome the builtplate because the very fine spokes might break if ripped off with excessive force.
• Fits securely with friction or tape depending on lens design - should not require any modification or additions
• Lightweight, rigid, and fast to print
• Ideal for both DSLR/Mirrorless lenses and astrophotography cameras

 What is a Bahtinov Mask?

A Bahtinov mask is a focusing tool that creates a unique diffraction pattern when placed in front of your lens or telescope.
By adjusting focus until the center spike aligns perfectly, you get the most accurate focus possible — even in complete darkness (as long as you have clear skies, ofcourse)

It’s an essential accessory for anyone doing:

• Astrophotography
• Deep-sky imaging
• Planetary photography
• Long-exposure night sky shots

How to Use a Bahtinov Mask (Short Guide)

1. Place the mask in front of your lens or telescope, with the center spoke pointing up, vertical lines pointing down.
2. Point your camera at a bright star.
3. Activate live view or use your focusing software (ASIAIR, NINA, etc.). You may need to over-expose and use your live view zoom.
4. You will see three diffraction spikes – two symmetrical and one center spike.
5. Adjust focus until the center spike sits exactly between the other two.
6. Remove the mask and start shooting with perfect focus.

Simple, fast, and extremely accurate.

Clear skies!