Bahtinov Mask for 100mm Telescopes

A Bahtinov Mask helps you to get a perfect focus with the help of diffraction spikes. The Bahtinov mask is put in front of your telescope and it creates a diffraction pattern that you can use to focus the telescope.

Our Bahtinov masks are available in the following diameters:

• BatPlus080 - for tube diameter 82-100mm
• BatPlus100 - for tube diameter 104-119mm
  
• BatPlus127 - for tube diameter 114-171mm
• BatPlus150 - for tube diameter 169-211mm
• BatPlus200 - for tube diameter 228-292mm
• BatPlus250 - for tube diameter 278-342mm
• BatPlus300 - for tube diameter 344-438mm

... for small diameters, the mounting screws must be attached to the inside of the grille instead of in the 4 slots!