Sky Brightness Maps

Wow is this cool.   We’ve all seen the black-and-white world-at-night map; this one is more accurate and more current.   There is a series of about a dozen maps to pick from.   It lets you ask your students questions about sociology and geography.  Plus pick our your location for your next star party!   Thanks John WD5IKX for the link!

Click on http://djlorenz.github.io/astronomy/lp2006/overlay/dark.html   and then click on “More Information” to access the other maps.