Photographer's Ephemeris(iOS and Android App, Web Page): Gives you details of astronomical events such as sun and moon position, rise and set times.
Google Sky Map(Android App): Easily figure out where things are in the night sky using your phone or tablet.
Light Pollution Map(Web Page): A map of light pollution pulling from various satellite data. Great for checking how dark a location is.
Night Photography Classes
Post Processing and Workflow Classes
Night Photography Related Blog Posts