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View Poll Results: What's your opinion of LED streetlights?
Yeah 18 62.07%
Meh 3 10.34%
Nah 8 27.59%
Voters: 29. You may not vote on this poll

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Old 05-10-2019, 12:49 AM
 
3,583 posts, read 2,725,387 times
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I understand the necessity of outdoor lighting, particularly along our streets, and since they are more economical. However, as an amateur astronomer, I am fully against full spectrum LED outdoor lighting. Since these lights have become available and in use, light pollution in this country has gone from abysmally bad to, for all intents and purpose, catastrophic for those who actually look at and photograph the stars. I am the director of the Louisville Astronomical Society James G. Baker Center for Astronomy, our dark sky site, 60 miles west of Louisville. In the past five years our site has been reclassified from a Bortle class 3 (Rural sky) to a Bortle class 4 (Rural/suburban transition). 10 years ago, it was a Bortle class 2 (Typical truly dark site). If you must have outdoor lighting, please make sure it is shielded so that it doesn't shine up into the atmosphere.
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Old Yesterday, 06:32 PM
 
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Originally Posted by orogenicman View Post
I understand the necessity of outdoor lighting, particularly along our streets, and since they are more economical. However, as an amateur astronomer, I am fully against full spectrum LED outdoor lighting. Since these lights have become available and in use, light pollution in this country has gone from abysmally bad to, for all intents and purpose, catastrophic for those who actually look at and photograph the stars. I am the director of the Louisville Astronomical Society James G. Baker Center for Astronomy, our dark sky site, 60 miles west of Louisville. In the past five years our site has been reclassified from a Bortle class 3 (Rural sky) to a Bortle class 4 (Rural/suburban transition). 10 years ago, it was a Bortle class 2 (Typical truly dark site). If you must have outdoor lighting, please make sure it is shielded so that it doesn't shine up into the atmosphere.
Modern LED luminaries are shielded to prevent Uplight.
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Old Today, 01:14 PM
 
3,583 posts, read 2,725,387 times
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Originally Posted by pvande55 View Post
Modern LED luminaries are shielded to prevent Uplight.
I have seen many outdoor LED lights where I live that, in fact, are not shielded. Where I live, the electric company will not shield lights unless it is specifically requested. NASA satellite images show how LED lights have significantly brightened up our city skies these past ten years.
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