Package Include
1 x Focusing Mask

Features
- Color: Black Astronomical Telescope Mask.
- Size: 9.50X9.50X0.10cm/3.73X3.73X0.04in Focus Mask
- Material: Aluminum alloy Aluminum Alloy Focus Mask.
- Focusing masks produce a distinct, intersecting pattern once accurate focus is achieved Aluminum Alloy Astronomical Telescope Mask.
Aluminum Alloy Focusing Mask
- Suitable for use on all of telescope, reflectors, refractors Aluminum Alloy Bahtinov Mask.
- Adopts precision production to the stable characteristics and high reliability Metal Focusing 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. 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 Aluminum Alloy Telescope Mask.

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