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Description
Product can be shipped as of 01.04.2021Order now!
Bahtinov Mask for Celestron 11″ RASA- is an ingenious new way to easily focus a telescope. Pavel Bahtinov, a Russian amateur telescope maker and astronomer, created this simple, very intuitive method and the device has universally been named after him: The Bahtinov Mask.
Bahtinov focus mask
The focus mask is used to facilitate accurate focusing when doing astrophotography.
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