01 / Light Pollution Ordinance (光害防止条例)
The starry-sky ordinance opens its preamblewith a legend of shooting stars.

In November 1989, the former Bisei Town enacted an ordinance against light pollution. A Ministry of the Environment document says it was enacted “ahead of the rest of the country.” The preamble cites “a legend of shooting stars and a starry sky worthy of the name” and declares the right and duty to protect the night sky. The town’s Bisei Astronomical Observatory has a telescope with a 101 cm mirror.
- Enacted 22 November 1989
- Goal of the old ordinance: sky brightness up by no more than 10% of natural
- Observatory telescope: 101 cm mirror

