Notice the light is in a cone directed at the ground.

Space/Science » in reply to The fact that - in the same shot - you can see Taurus so clearly and beautifully...

et — 1/13/2004 6:39:33 PM (archived)

This is done by putting reflective shrouds above the lights. The sodium spectra can be filtered for astronomy purposes but what about having access to the night sky with the naked eye or binoculars? That's what this is about...sorry if I wasn't clear on that.

Go Opportunity!

The whole thread (11 posts)

EPOD image: Sodium light pollution - et - 1/13/2004 5:50:32 PM
- The fact that - in the same shot - you can see Taurus so clearly and beautifully... - alcaray - 1/13/2004 6:13:21 PM
  - The visible light spectrum is so narrow... - Larry J - 1/13/2004 7:17:36 PM
    - But the sodium transition is FAR narrower - R.L. - 1/14/2004 5:42:43 AM
      - re: But the sodium transition is FAR narrower - Larry J - 1/14/2004 2:50:29 PM
        
        re: But the sodium transition is FAR narrower - et - 1/14/2004 7:03:47 PM
    - It wouldn't work Larry. - et - 1/13/2004 7:30:01 PM
      - I'm not so certain of that - Larry J - 1/13/2004 8:10:18 PM
        
        speaking of flickering lights - Delbert - 1/13/2004 11:48:23 PM
      - Actually... - R.L. - 1/13/2004 8:08:03 PM
  - Notice the light is in a cone directed at the ground. - et - 1/13/2004 6:39:33 PM

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