East Valley Astronomy Club (EVAC) |
![](http://saguaroastro.org/wp-content/uploads/evac-300x82.png) |
Heavens Above |
![](http://saguaroastro.org/wp-content/uploads/HeavensAbove.png) |
International Dark Sky Association |
![](http://saguaroastro.org/wp-content/uploads/IDA-300x159.png) |
Astronomical League |
![](http://saguaroastro.org/wp-content/uploads/AL-Logo-Observing50yrs-200x100.png) |
Lighting Information and the Health Effects of Light Pollution |
![](http://saguaroastro.org/wp-content/uploads/wci.jpg) |
APOD |
![](http://saguaroastro.org/wp-content/uploads/apod.gif) |
Light Pollution Map |
![](http://saguaroastro.org/wp-content/uploads/LightMap-150x150.jpg) |
American Association of Variable Star Observers (AAVSO) |
![](http://saguaroastro.org/wp-content/uploads/aavso.jpg) |
Society for Astronomical Sciences |
![](http://saguaroastro.org/wp-content/uploads/SAS_Spectrum_-Logo-150x150.jpg) |