Order No. 227.SPR
This handy device allows several people to observe sunspots, planetary transits and eclipses at the same time, comfortably and completely safely. A sun filter is not required, because thanks to a sophisticated optical system, the eye is only focused on a projected image of the sun.
The size of the sun image is either 75 or 55 mm and can be viewed comfortably at right angles to the incident sunlight – very practical when the sun is high in the sky!
The optical system consists of a double-lens glass achromat with a diameter of 30 mm and a focal length of 250 mm, which can be stopped down in 5 steps to 12 mm, an interchangeable optical system with 2 convex mirrors with a focal length of -10 and -14 mm and a plane mirror made of acrylic glass.
The sun projector is very easy to operate: It sits on a Dobson base and can be adjusted to any height between 0° and 90°. Two integrated quadrants allow the determination of the sun elevation.
sturdy die-cut 350g carton
fine gold print
Dimensions: 200 x 200 x 250 mm
Packaging: 300 x 210 x 12 mm