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Bahtinov focus mask for 2.5-4.5" $13.30

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Bahtinov focus mask for 2.5-4.5"

Bahtinov focus mask for telescopes with dew shield from 2.5" to 4.5"

Bahtinov Focus Mask for 3.5-6.5" $15.10

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Bahtinov Focus Mask for 3.5-6.5"

Bahtinov Focus Mask for telescopes with dew shield from 3.5" to 6.5" in diameter

Bahtinov focus mask for 5.5-8.5 diameter $16.90

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Bahtinov focus mask for 5.5-8.5 diameter

Bahtinov focus mask for telescopes with dew shield O.D. from 5.5" to 8.5" in diameter.

Bahtinov focus mask for 6.5"-9.5" diameter $16.90

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Bahtinov focus mask for 6.5"-9.5" diameter

Bahtinov focus mask for telescopes with dew shield O.D. from 6.5" to 9.5" diameter

Bahtinov focus mask for 7.5-10.5" telescope $20.45

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Bahtinov focus mask for 7.5-10.5" telescope

Bahtinov focus mask for telescopes with dew shield O.D. from 7.5" to 10.5' diameter

Bahtinov focus mask for Celestron 8" SCT $17.80

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Bahtinov focus mask for Celestron 8" SCT

Bahtinov Focus Mask for  Celestron Schmidt Cassegrain 8" telescope

Bahtinov focus mask for Meade 8" SCT $17.80

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Bahtinov focus mask for Meade 8" SCT

Bahtinov focus mask for Meade 8" Schmidt Cassegrain telescope

Focus Mask, Celestron 11 $22.25

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Focus Mask, Celestron 11

Focus Mask, Celestron 11 Bahtinov focus mask for Celestron C11 Schmidt-Cassegrain telescope.Bahtinov Focus MasksIn 2008, Pavel Bahtinov, a Russian amateur telescope maker and astronomer, published an ingenious new way to easily focus your DSLR...

Focus Mask, Celestron 11 w/Hyperstar $22.25

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Focus Mask, Celestron 11 w/Hyperstar

Focus Mask, Celestron 11 with HyperStar Bahtinov focus mask for Celestron C11 Schmidt-Cassegrain telescope, with HyperStar. Bahtinov Focus MasksIn 2008, Pavel Bahtinov, a Russian amateur telescope maker and astronomer, published an ingenious new way...

Focus Mask, Meade 10" SCT $22.25

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Focus Mask, Meade 10" SCT

Focus Mask, Meade 10" SCT Bahtinov focus mask for Meade 10" Schmidt-Cassegrain telescope.Bahtinov Focus MasksIn 2008, Pavel Bahtinov, a Russian amateur telescope maker and astronomer, published an ingenious new way to easily focus your...


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