Full Aperture Focusing Screens Archives - Trevinca Skies

- €79,00
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- Astrozap Bahtinov focus mask for 216mm-292mm apertures
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- €59,00
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- Astrozap Bahtinov focusing mask for 139mm-216mm apertures
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- €52,90
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- Astrozap Bahtinov focusing mask for 63mm-139mm apertures
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- €129,00
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- Astrozap Bahtinov focusing mask for apertures of 368mm-444mm
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- €109,00
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- Astrozap Bahtinov focusing mask, 292mm-368mm
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