Kase Bright Star Professional Bahtinov Filter Focus Threaded Filter 77mm/82mm Size:82mm A bahtinov focus tool will

A bahtinov focus tool will cut your setup time down to mere minutes with ease

aim your lens or telescope at a bright star and manually adjust the focus of your lens or telescope until it looks close to focus

Printed in the USA

Gently attach the mask to diffract light into three spikes

even in the dark

Kase Bright Star Professional Bahtinov Filter Focus Threaded Filter 77mm/82mm Size:82mm A bahtinov focus tool willLaser Precise Focus at night Don't miss another clear night. Get perfect focus every time with a laser etched Threaded Bahtinov Filter for your camera lens. If you've ever spent hours trying to manually focus your camera on the stars at night, you know the struggle. A bahtinov mask will cut your setup time down to mere minutes with ease. Kase Bright Star Get perfect focus on the stars and planets with a laser etched batinov mask. Shockproof tempered