The Solar Projector - AstroMedia
Pre-cut AstroMedia cardboard kit for a projection device for observing the sun without danger.
This handy device allows several people to observe sunspots, planetary transits and eclipses at the same time in comfort and without any danger. Thanks to sophisticated optics, the gaze falls only on a projected image of the sun, so no solar filter is needed.
The principle
The optics
The optics consist of a double-lens glass achromat with a diameter of 30 mm and a focal length of 250 mm, which can be stopped down to 12 mm in five steps, an interchangeable optic with 2 convex mirrors with focal lengths of -10 and -14 mm respectively, and a plane mirror made of acrylic glass.
Easy to operate
The solar projector is very easy to operate: It sits on a Dobsonian base and can be adjusted to any elevation between 0° and 90°. Two integrated quadrants make it possible to determine the altitude 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!
Here are some customer videos.
You can find an illustrated construction report here.
| Aspiration scale: | Medium |
|---|---|
| Time Line: | 2,0 Hours |
- 8 pre-punched and printed construction cardboard - DIN A4
- various mirrors and achromatic objective lens
- detailed assembly instructions
Dimensions of the built article: approx. 18.5 x 26.5 x 25 cm (W/D/H)
Construction time: approx. 2 hours
Distributor:
PGI-Skarabäus, Im Kränzliacker 9, 79576 Weil am Rhein, Germany, pgi-shop.de
PGI-Skarabäus, Lerchenstrasse 38, 4147 Aesch, Switzerland, pgi-shop.ch
Manufacturer: AstroMedia GmbH, Im Wirrigen 30, 45731 Waltrop, Germany, astromedia.de
Adult supervision:
Children under 14 years of age should use the kit under adult supervision to avoid risks from improper handling.
Be careful with small parts:
Hazard of suffocation! Keep small parts out of the reach of small children.
Risk of injury:
Be particularly careful when handling pointed and sharp parts! Use sharp tools carefully and, if necessary, take appropriate safety measures to avoid injuries.
Fire hazard:
Keep away from open fire and heat sources. Product contains highly flammable materials.
Be careful when focusing light: Do not leave lenses in direct sunlight as they can create a focal point.
Use of adhesive:
When using adhesive, follow the manufacturer's safety instructions. Work in well-ventilated rooms and avoid skin or eye contact.
Intended use:
The kit may only be used in accordance with the enclosed instructions. Independent modifications can affect the functionality and safety of the built model.
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