Focusing Mask Bahtinov 290-340mm

TS Optics Bahtinov masks, for precise focusing in astrophotography - made of robust plastic.

Bahtinov masks enable highly accurate focusing in astrophotography. You can clearly see when you have achieved optimum sharpness - no more tedious trial and error is necessary.

The Bahtinov masks from TS Optics are available for the following clip-on diameters:

• 65 - 100 mm
• 85 - 120 mm
• 105 - 150 mm
• 125 - 180 mm
• 150 - 200 mm
• 175 - 220 mm
• 195 - 240 mm
• 215 - 260 mm
• 250 - 290 mm
• 290 - 340 mm