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The Explore Scientific Galileoscope is a build-your-own 50mm refractor telescope STEM kit that enables hands-on learning of optical principles while providing genuine observational capability. Designed by astronomers and optical engineers, this tool-free assembly kit includes all components needed to observe lunar craters, Jupiter's moons, Saturn's rings, and star clusters. The kit features a versatile 25x eyepiece and a custom accessory that functions as either a 2x Barlow lens for 50x magnification or a 17x Galilean eyepiece for upright viewing, replicating Galileo's original observational experience while teaching fundamental concepts in lens function and magnification.
| Focal ratio | f/10 |
| Field of View | 1.5° |
| Eyepiece Barrel Diameter | 31.75 in |
| Primary Eyepiece Focal Length | 20 mm |
| Telescope Type | Refractor |
| Objective Diameter | 50 mm |
| Magnification (Eyepiece) | 25 |
| Eye Relief | 16 mm |
| Kit Assembly Required | ✓ |
| Field of View (with Barlow) | 0.75° |
| Objective Focal Length | 500 mm |
| Magnification (with Barlow) | 50 |
| Eye Relief (with Barlow) | 22 mm |
| Tools Required for Assembly | false |