https://stemin3d.net/ 2026-04-13T21:17:04+00:00 https://stemin3d.net/ https://stemin3d.net/_media/favicon.ico text/html 2025-12-17T13:39:34+00:00 song (song@undisclosed.example.com) https://stemin3d.net/?image=projects%3Alct_instructional_models.png&ns=projects&rev=1765978774&tab_details=history&media_do=diff&do=media <img src="https://stemin3d.net/_media/projects/lct_instructional_models.png?w=500&amp;h=500&amp;tok=c5f16a" alt="lct_instructional_models.png" loading="lazy" width="500" height="500" /> text/html 2025-12-14T00:43:28+00:00 song (song@undisclosed.example.com) https://stemin3d.net/projects/sample_observations?rev=1765673008&do=diff Sample Observations Observed photos taken with FirstScope + Smartphone [Moon, 20mm eyepiece, 1/30 sec] [Double Cluster, 15mm eyepiece] [Saturn + Titan, 4mm eyepiece] [Pleiades, 3 sec] [Messier 25, 20mm eyepiece] [Jupiter + 3 moons, 4mm eyepiece] Observed photos taken with a smart telescope [ M33, 26 min exposure] M33, 26 min exposure [ Pleiades (M45), 4 min exposure] Pleiades (M45), 4 min exposure [ Andromeda galaxy, 56 min exposure] Andromeda galaxy, 56 min exposure text/html 2025-12-14T00:42:13+00:00 song (song@undisclosed.example.com) https://stemin3d.net/projects/low-cost-telescope?rev=1765672933&do=diff Low‑Cost Telescope (LCT): Active Learning Astronomy Project Lead: Inseok Song The Low-Cost Telescope (LCT) Project addresses a critical gap in astronomy education: the lack of scalable, hands-on observational experiences. Traditional astronomy labs rely on expensive, department-owned telescopes, limiting access and reducing opportunities for active learning. Our solution provides each student with an individually operable, low-cost telescope (under $100) paired with a smartphone adapter for di… text/html 2025-12-14T00:36:17+00:00 song (song@undisclosed.example.com) https://stemin3d.net/?image=projects%3Aimg_0051.jpg&ns=projects&rev=1765672577&tab_details=history&media_do=diff&do=media <img src="https://stemin3d.net/_media/projects/img_0051.jpg?w=500&amp;h=500&amp;tok=2adf09" alt="img_0051.jpg" loading="lazy" width="500" height="500" /> text/html 2025-12-14T00:36:12+00:00 song (song@undisclosed.example.com) https://stemin3d.net/?image=projects%3Aimg_0038.jpg&ns=projects&rev=1765672572&tab_details=history&media_do=diff&do=media <img src="https://stemin3d.net/_media/projects/img_0038.jpg?w=500&amp;h=500&amp;tok=cdd8f8" alt="img_0038.jpg" loading="lazy" width="500" height="500" /> text/html 2025-12-14T00:36:10+00:00 song (song@undisclosed.example.com) 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height="500" /> text/html 2025-12-14T00:03:20+00:00 song (song@undisclosed.example.com) https://stemin3d.net/?image=projects%3Alct_quickstart_guide.pdf&ns=projects&rev=1765670600&tab_details=history&media_do=diff&do=media <img src="https://stemin3d.net/lib/images/fileicons/svg/pdf.svg" alt="lct_quickstart_guide.pdf" loading="lazy" width="500" height="500" /> text/html 2025-12-08T19:40:43+00:00 song (song@undisclosed.example.com) https://stemin3d.net/?image=tech%3Atutorials%3Aplanetary_orbit_calculation.pdf&ns=tech%3Atutorials&rev=1765222843&tab_details=history&media_do=diff&do=media <img src="https://stemin3d.net/lib/images/fileicons/svg/pdf.svg" alt="planetary_orbit_calculation.pdf" loading="lazy" width="500" height="500" /> text/html 2025-08-25T14:50:46+00:00 song (song@undisclosed.example.com) https://stemin3d.net/?image=topics%3Aguidesfororbit_-_made_with_clipchamp.gif&ns=topics&rev=1756133446&tab_details=history&media_do=diff&do=media <img 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