Package List
1 x Focusing Mask

Characteristics
- Color: Black Bahtinov Mask.
- Material: Aluminum alloy Aluminum Alloy Astronomical Telescope Mask.
- Size: 9.50X9.50X0.10cm/3.73X3.73X0.04in Aluminum Alloy Focusing Mask
- Suitable for use on all of telescope, reflectors, refractors Astronomical Telescope Mask.
- Focusing masks produce a distinct, intersecting pattern once accurate focus is achieved Metal Bahtinov Mask.
- Focusing masks take the guesswork out of focusing and even get over the seeing conditions as it is a mathematical type approach to the task. The focus for your telescope quickly and easily Metal Focus Mask.
Aluminum Alloy Focus Mask
- Adopts precision production to the stable characteristics and high reliability Aluminum Alloy Telescope Mask.
- The masks grip the telescope tube gently but firmly with three metal posts which have non-scratching silicon sleeves to protect your valued telescope surface. This prevents slippage, whilst allowing the mask to remain central. Aluminum Alloy Bahtinov Mask

Goods Information
Aluminum Alloy Bahtinov Mask These focusing masks are adjustable to fit a wide range of optical tubes, unlike masks which are only able to telescope.Focusing Mask Because of this 3-post mounting, the mask remains , whilst fitting a wider range of telescopes