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15 December 2024

  • curprev 20:3020:30, 15 December 2024 What's Up? talk contribs 293 bytes +293 Seestar S50 A triplet apochromatic lens with a 50 mm aperture, 250 mm focal length, and f/5 focal ratio. It also includes one piece of ED glass to control chromatic aberration. The S50's imaging performance is comparable to that of a professional refractor with the same aperture
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