While reading up on Adrien’s blog, he mentioned a site which I hadn’t seen before. It attempts to predict how good the conditions will be for astrononomy and astrophotography for locations around North America. For instance, I teach (well, more properly used to teach, since I’ve been enormously busy lately) telescope making at the Chabot Space and Science Center. Here’s the prediction for them:

As you can see, it’s not a particularly dark site, but the information is quite useful. Thanks for blogging about this Adrien!