Feature(may vary by option.)

●Bahtinov masks take the guesswork out of focusing and even come across vision conditions as it is a mathematical approach to the task. The best focus for your telescope is quick and easy.
●Suitable for all types of telescopes - reflectors, rap actors, Dobsonians, Mak-Cas and SCTs. They are made of precise, laser-cut plexiglass that is stiff and durable. They will never become brittle in the cold, unlike some other masks that are made of normal plastics.
●The masks grip the telescopic tube gently but firmly with three metal posts that have non-scratching silicone sleeves to protect your valuable telescopic surface. This prevents slipping and allows the mask to remain perfectly central. This 3-post assembly keeps the mask centered while accommodating a wider range of telescopes.
●They are made from 2mm thick laser cut plexiglass and the mounting screws are covered with soft plastic so they wont damage your telescope. These high quality Bahtinov masks are adjustable to fit a variety of optical tubes, unlike masks that are only able to fit just one telescope. They have an adjustment width of approx. 65-100mm, depending on the model, in the aperture, making them very versatile.
●Please rest assured that these focusing masks will work great for both reflectors and refractors with any focal length. All you need to do is measure your telescopic tube size and choose the right size of the mask (contact us if you are not sure where to measure).


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