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Telescopes Tips
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Who you, a Guru? After you read these 249 Telescopes tips, you'll be one. But we're looking to recruit a Guru to blog, write a 101 tip Telescopes book, and become a leader of this community.
Who you, a Guru? Apply now.
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Lumicon FilterThere is a Lumicon filter for just about every telescope. They test all their filters on a Perkin-Elmer Double-Beam Spectrophotometer, and they proudly inscribe the % of transmission for each of the primary lines on the filter ring.
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