Dark Sky Lighting(savingourstars.org)
238 points by alexandrehtrb 5 days ago | 51 comments
tl;dr: Dark-sky lighting reduces light pollution by fully shielding fixtures to direct light downward, using amber colors (instead of blue-rich white LEDs) at lower brightness levels, and employing timers or motion sensors. Proponents argue it improves safety (less glare), health (preserves circadian rhythms), and wildlife protection while restoring visibility of the night sky—citing Flagstaff, AZ as a successful example. The article urges readers to pressure local officials to adopt amber LEDs rather than the white LED streetlights currently replacing older lighting.
HN Discussion:
  • ~Article doesn't go far enough; 2200K is needed instead of recommended 3000K
  • ~Satellite constellations are a bigger threat to dark skies than lighting
  • Dark-sky lighting has additional benefits like better sleep and wildlife protection
  • Convinced by the argument but can't find quality residential products to buy
  • LEDs are genuinely harmful and this discussion validates concerns