By using a series of mirrors, the device projects a bright 3.25-inch solar image onto a
5-inch white viewing screen through a powerful 62 mm diameter objective lens. In its
perfectly curved cradle, the Sunspotter is easily aligned to the Sun in seconds, without the complication of telescopes, solar filters, and tripods.

Unlike other ways of viewing the Sun, the compact and sturdy Sunspotter is convenient, easy to set up, lightweight and fun to use. And, because of its unique design, this kid-friendly instrument makes our closest star a safer subject of study by even the youngest students.

Sunspotter Specifications

• Telescope Type: folded-path refractor, F11, altitude-azimuth design
• Objective Lens: 2-element achromat, 700mm FL, fully coated
• Objective Aperture: 61.7mm diameter, stopped down to 57.0mm
• Mirrors: 50mm x 50mm x 10mm, two @ 25mm x 25mm x 5mm, <1/4 wave flatness
• Field Lens: 4-element, 12.5mm FL Plössl, fully coated, 10mm aperture
• Total Path Length: 875mm, fixed focus
• Equivalent Magnification: 56x
• Approximate Solar Image Diameter: 85mm (3.25?)
• Field of View: .75° (1.5 solar diameters)
• Pointing Range: altitude 0°-30°, 30°-90° (reversed), azimuth 0°-360°
• Pointing Aids: 2.2cm gnomon (±30°), 22cm pinhole projections (±3°)
• Frame Material: 15mm 9-ply (cradle), 20mm 13-ply (telescope), Baltic plywood
• Overall Dimensions: (H x L x W) 40cm x 37cm x 15cm (16? x 15? x 6?)
• Total Weight: 3kg (6.6lb)