Post by charlie on Sept 13, 2022 14:20:18 GMT -7
Somewhere on the internet can be found a description of an older-fashioned meteor projector made by someone at the Fels Planetarium. It consisted of a pinhole (but lensed) light source, a constantly rotating mirror (to create a dot of light streaking away from the radiant) and a "randomizing" motor mechanism to change the angle from the radiant after a meteor was produced.
I reproduced it and it worked well (tho the meteor rate is too high). The key to the angle randomizer was a slowly rotating "gear" whose wide teeth had varying width. A limit switch would be activated by this "gear" and would control both the randomizing motor and the light source.
I reproduced it and it worked well (tho the meteor rate is too high). The key to the angle randomizer was a slowly rotating "gear" whose wide teeth had varying width. A limit switch would be activated by this "gear" and would control both the randomizing motor and the light source.
