| 摘要 |
<p>PURPOSE:To provide the means which superimposes and draws a constellation picture on an actual night sky as a background. CONSTITUTION:A screen 3 which transmits external light beams is installed in the sky and a scanner device 2 which projects a scanning laser light beam is installed on the ground; when the screen 3 is irradiated with the laser light beam 4 projected from the ground, the laser beam which is intense enough to view its reflected light on the group is projected, and consequently an image such as the constellation picture drawn by the scanning of the laser light beam 4 can be viewed together with heavenly bodies (star) in the background. Consequently, the constellation picture can be drawn on the actual night sky as the background and a new tool which is effective to an educational learning observation of heavenly bodies and constellations is obtained.</p> |
