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Amazon.com : SVBONY Telescope Filter 1.25 inches CLS Filter City Light Pollution Reduction Filter Broadband Filter Suitable for Deep Sky Visual Astronomical Photography : Electronics
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1.25''/2''/EOS-C CLS Light Pollution Broadband Filters Ultra High Contrast Filter Reduce Light Pollution
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Vaonis Vaonis CLS Filter for Vespera Robotic Smart Telescope - ST50-CLS - Camera Concepts & Telescope Solutions
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