William Optics 75-110mm Focus mask Bahtinov

Fast focusing without effort

The William Optics 75-110mm Bahtinov mask helps you find the right focus instantly. You place the mask on your telescope and immediately see clear lines in the image. So you know exactly when you are in focus. You don't have to guess or gamble - you see it right away.

Clear image even for faint stars

The mask is made of optical acrylic glass with 92% light transmission. This keeps your image clear, allowing you to focus on faint stars as well. You can see the pattern more clearly, making focusing faster and your shot instantly sharp.

Stronger pattern for even more precision

The imprinted Bahtinov pattern provides three times more bending than standard metal masks. That means the lines are further apart and stay more visible. You determine your focus more accurately and avoid blurred stars in your photos.

Fits perfectly on small telescopes

The focus mask works on telescopes from 75 to 110 mm. Ideal for small refractors and compact travel setups. You snap it on, focus and start shooting immediately - simply and reliably.

Specifications

General