IDA Night Watch, December 17, 2015
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Lessons From the LED Retrofit Revolution

A recent news article draws attention to a new street lighting project just completed in downtown Philadelphia, Pennsylvania. There are many similar stories like this from across the globe as LED technology brings new opportunities and challenges in how we light our cities. Unfortunately, municipalities enticed by substantial cost savings continue to rush into LED conversions without doing their homework. 

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Join IDA, renew your IDA membership, or donate at the $50 level or above and you'll receive this stunning calendar.


5 Stunning “Moonbow” Photos

We’ve all seen rainbows, but have you ever seen the rare phenomenon known as a  moonbow?


City's LED Retrofit Shows Need For Careful Lighting Choices

The initial LED streetlight installation went awry, but this story has a happy ending!


New International Dark Sky Reserve in Wales

Snowdonia National Park has been named a Dark Sky Reserve, only the tenth Reserve ever named.


Night Sky Data to the People!

New project “Myskyatnight” invites people from all over the world to examine changes in their night sky.

We are working to protect the night sky. Join Us!
More than half of our annual operating budget comes from our generous supporters … folks like you! Without you, we couldn't continue our mission to protect the night sky for generations to come. We deeply appreciate, and rely on, your continued support.
Solace in Solitude
from Sashikanth R. Chintla

Fun Fact:

The full moon this Christmas is the first in 38 years! 
In a cosmic coincidence, the last time we had one on Christmas was the year Star Wars: A New Hope was released. And, this year we see the return of the franchise with The Force Awakens.
Copyright © 2015 International Dark-Sky Association, All rights reserved.

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