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Description
45-Degree Erect Image DiagonalDid you know that most telescopes work well for daytime viewing as well as for astronomy? If you have a refractor or a catadioptric telescope (the Schmidt Cassegrain is the most popular example), and you would like to use it for terrestrial observations, the most useful additional accessory you can buy is an erect image diagonal. If you look through your telescope with the standard mirror or star diagonal installed, you will notice that objects may be
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Best in 7 days
Best in 7 days
Best in 7 days
Best in 7 days
4.1 ★★★★★
Based on 691 reviews
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Product Reviews
★★★★★ 5
It’s the right part tor Acura integra
Size: 7.32" x 7.48" x 2.28"
Perfect fit easy to replace good quality !
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 9, 2026
★★★★★ 5
perfect fit for 2025 Honda CRV Hybrid 2.0 engine
Size: 8.26" x 5.63" x 2.24"
Appears to be a well made air filter
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 12, 2026
★★★★★ 5
Good filter
Size: 14.7" x 7.99" x 1.26"
Fits well.
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Reviewed in the United States on May 16, 2026
★★★★★ 5
Just what I needed
Size: 8.26" x 5.63" x 2.24"
Great value and great quality
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Reviewed in the United States on May 3, 2026
★★★★★ 5
Perfect fit
Size: 8.26" x 5.63" x 2.24"
A little difficult to access but the University of YouTube helped with that. Filter fit perfectly.
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Reviewed in the United States on May 27, 2026
