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Explore Scientific 3" Field Flattener .7x Focal Reducer - FFFR507X-00
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APM Telescopes. TS Optics Focal reducer 0.5x - 2 inch filter thread
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Celestron .7x Focal Reducer for 9.25" EdgeHD Telescope | High Point Scientific
SVBONY 1.25-inch 0.5x focal reducer f9154a for astronomical telescope | eBay
Celestron f/6.3 Reducer/Corrector 94175 B&H Photo Video
Celestron f/6.3 Focal Reducer/Corrector Lens - 94175 - Telescopes at Telescopes
