This focusing mask is made of aluminum alloy, with size of 9.50X9.50X0.10cm/3.73X3.73X0.04in and black color. It features adjustable design to fit a wide range of optical tubes, which is different from fixed masks that only fit specific telescopes. With fine workmanship and creative appearance, it is popular and practical for telescope focusing. It works excellently for both reflectors and refractors with any focal length. The 3-post mounting design keeps the mask stable while fitting a wider range of telescopes. It is compatible with any type of telescope, especially useful for astrophotography setups to achieve accurate focus. Package includes 1 x focusing mask.
What's in the box
1 x Focusing Mask
