Criterion CP4 Achromatic Barlow (Pre-Owned)
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Criterion CP4 Achromatic Barlow (Pre-Owned)
A classic telescope accessory designed to increase the effective magnification of your eyepieces while maintaining good optical correction.
Function:
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Doubles the magnification of most telescope eyepieces
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Maintains better color correction than single-element Barlows thanks to its achromatic design
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Allows observers to achieve higher magnification without needing extremely short focal length eyepieces
Specifications:Designed for classic Criterion and other vintage telescopes using 0.965" eyepieces,Achromatic doublet,Barrel size: 0.965 in.
Condition: Good condition,no scratches on lense, some wear that will not affect function