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PrintablesFabian Haensch
Sonnenprojektor / Camera Obscura – Lochkamera aus KG-Rohr DN125 (Sonnenfinsternis)
Solar Projector / Camera Obscura – Pinhole Sun Viewer from DN125 pipe Safe solar viewing by pinhole projection – no lens. The sun is projected through a tiny pinhole onto a paper screen. Great for sunspots, sunrise/sunset and partial…
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