Using a Bahtinov mask sounds easy, but a few common mistakes can trip you up:
- Misaligning the Mask: Make sure it sits squarely on your telescope’s aperture to avoid distorted patterns.
- Wrong Mask Size: A mask that’s too big or small won’t produce accurate spikes.
- Poor Seeing Conditions: Atmospheric turbulence blurs spikes—choose nights with steady skies.
- Using Too Bright or Dim Stars: Aim for stars around magnitude 2-4 for clear diffraction spikes.
- Ignoring Calibration: Always check images before and after focusing to confirm sharpness.
Keep your mask clean and handle it carefully to maintain crisp diffraction patterns. Avoid these pitfalls, and your Bahtinov mask will become your best focusing buddy.
