Bahtinov

Bahtinov Mask
High Quality Aluminum Bahtinov mask. The Bahtinov mask achieves perfect focus in seconds. The Bahtinov Mask was invented by Pavel Bahtinov from Russia.
Spike-a.com ~

Bahtinov Mask by Focus-Mask
focus-mask brand bahtinov mask focuses your telescope. Pavel Bahtinov invented this amazing tool for telescope focusing
Focus-mask.com ~

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Untitled Document
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astrojargon - Home
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Iowa County Astronomers
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