Package List
1 x Focusing Mask

Features
- Color: Black.
-Product Info:Metal fish
- Size: 9.50X9.50X0.10cm/3.73X3.73X0.04in
- Material: Aluminum alloy.
- Adopts precision production to the stable characteristics and high reliability telescope focusing mask.
bahtinov mask for telescope
- Focusing masks produce a distinct, intersecting pattern once accurate focus is achieved bahtinov focus 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 perfectly central. bahtinov mask lens
- 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 best focus for your telescope quickly and easily bahtinov mask focusing.
- Suitable for use on all types of telescope, reflectors, refractors bahtinov mask.

Goods Description
telescope focusing mask These focusing masks are adjustable to fit a wide range of optical tubes, unlike masks which are only able to telescope.bahtinov focus mask Because of this 3-post mounting, the mask remains , whilst fitting a wider range of telescopes