Eyepieces
+Designed to aid focusing on astronomical telescopes
+Fits tube outer diameters from 150mm to 200mm
+Black mask suits a range of telescope tubes
−Only fits tubes with 150mm to 200mm outer diameter
No price recorded yet.
Product details
Astromania Bahtinov Focusing Mask for Astronomical Telescopes - FM140mm | For 150mm-200mm Tube Outer Diameter, WithNo price recorded yet.View on Amazon
Pros
+Designed to aid focusing on astronomical telescopes
+Fits tube outer diameters from 150mm to 200mm
+Black mask suits a range of telescope tubes
Cons−Only fits tubes with 150mm to 200mm outer diameter
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