- This Skywatcher 90 degree erecting prism is suitable for telescopes which use 1.25 inch (31.7mm) eyepieces.
- An erecting prism corrects the orientation of the image being viewed.
- Which is especially useful when using your telescope for terrestrial viewing.
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Skywatcher 90 Degree Erecting Prism (20377)
Original price was: $41.00.$28.70Current price is: $28.70.
This Skywatcher 90 degree erecting prism is suitable for telescopes which use 1.25 inch (31.7mm) eyepieces. An erecting prism corrects the image being viewed which is especially useful when using your telescope for terrestrial viewing.
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