Focus Masks

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Astro Essentials SeeStar S50 Bahtinov Focus Mask (6) £9.00	Astro Essentials 3D Printed SeeStar S50 Dew Shield (9) £12.00	TKAstroservice Bahtinov Mask for Samyang 135mm F2 Lens (1) £14.00	Astrodymium Bahtinov Mask Focusing Aid for Rokinon - Samyang 135mm F2 Lens £15.00	StarSharp Bahtinov Focus Masks (50) £16.00
$Astro Essentials Diffraction Spike Set for Seestar S50$ Astro Essentials Diffraction Spike Set for Seestar S50 £24.00	BuckeyeStargazer Bahtinov Masks £24.00	BuckeyeStargazer Duncan Mask for SCT Collimation (1) £24.00	BuckeyeStargazer TriBahtinov Mask for Collimation and Focus £24.00	Universal Bahtinov Mask 50mm - 150mm Diameter £30.00
William Optics Bahtinov Mask for Dew Shield ~diameter 75mm to 110mm (6) £39.00	William Optics Bahtinov Mask for Dew Shield ~diameter 105mm to 148mm (2) £43.00	William Optics Bahtinov Mask for Dew Shield ~diameter 172mm to 235mm (4) £59.00	William Optics Bahtinov Mask for Dew Shield ~diameter 243mm to 308mm £89.00	William Optics Bahtinov Mask Cover (Patented) for WO GT102 & Z103 £119.00
William Optics Bahtinov Mask Cover (Patented) for WO FLT132 £196.00