The Galileoscope was created under the auspices of the International Astronomical Union (IAU) as a global cornerstone project for the 2009 International Year of Astronomy (IYA). It solved a long-standing problem: the lack of a high-quality, low-cost telescope kit suitable for both optics education and celestial observation.
The Galileoscope program was expected to last only through the IYA, but the global astronomy education-and-outreach community loved the kit and it was kept in production for another 10 years, thanks in part to the kit also being named a cornerstone project of the 2015 International Year of Light. Over the past 10 years, more than a quarter million Galileoscope kits have been distributed to teachers, students, and other enthusiasts in more than 110 countries!
While assembling the kit, which requires no tools or adhesives, you can learn basic optical concepts, including how lenses form images. With your completed 2-inch-diameter, 25- to 50-power telescope, you can enjoy sharp views of lunar craters and mountains, Jupiter and its moons, and Saturn’s rings. The kit is augmented with free, standards-based optics-education and observing activities, available in multiple languages. The Galileoscope is suitable for students of all ages from 8 to 88!
|Objective diameter:||50 mm (2 inches)|
|Objective focal length:||500 mm (f/10)|
|Eyepiece focal length:||20 mm|
|Magnification:||25x (50x with Barlow)|
|Field of view:||1½° (¾° with Barlow)|
|Eyepiece eye relief:||16 mm (22 mm with Barlow)|
|Eyepiece barrel diameter:||1¼ inches (31¾ mm)|