BAHTINOV FOCUSING MASK ZenithStar The exterior of the dew

The exterior of the dew shield is a rigid

The atmosphere of this planet is thick and opaque and therefore it is impossible to capture any details of the surface of the planet

1050 g SKU

Nikon F bayonet as well as all other rings with 52 mm dovetail ring

BAHTINOV FOCUSING MASK ZenithStar The exterior of the dewThe Bahtinov or focusing mask is a brilliant aid to get a perfect focus. When the telescope is pointed toward a bright star, the mask generates a specific diffraction pattern that makes the focusing procedure easy. Adjust the focus of your telescope till you will see a symmetrical pattern. The mask is laser cut from glossy black acrylic and has slots for the included bolts which makes it possible to clamp it onto either the outside or inside of your