keywords: Sunspotter, 25V4210
Sunspotter Keplerian Telescope
Sunspotter Keplerian Telescope
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Safely View the Light of the Sun |
Unlike other ways of viewing the Sun, this wooden, folded-Keplerian telescope is safe and easy to use. By using a series of mirrors, the telescope projects a 3 1/2″ (85 mm) image of the sun onto a white viewing screen that can be easily seen by several students at once. They will be able to trace the changing positions of sunspots and compare them on a daily basis. The kid-friendly telescope is a folded refractor, F11, altitude-azimuth design and can be used to observe eclipses as well.Features:• 27 1/2″ (700 mm) FL objective lens• 2 1/2″ (61.7 mm) objective aperture stopped down to 2 1/4″ (57 mm)• 1/2″ (12.5 mm) fully-coated FL Plössl field lens, four element with a 10 mm aperture• 0.75° field of view (1.5 solar diameters)• 2.2 cm gnomon (±30°) and 22 cm pinhole projection (±3°) pointing aids• Overall size: 16″ x 15″ x 6″• Weight: 6 lbs., 9 1/2 oz.
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Model No. |
Description |
| 25W4210 |
Sunspotter Keplerian Telescope |
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