Sky Chart Help
The applet should work properly in most Java-enabled Web browsers. For best results on a PC, use Internet Explorer 6 or Netscape 7; on a Mac, use OS X 10.3 with Safari. If you have trouble getting the Sky Chart to open on your computer, please review our detailed system requirements to check whether you're using a supported operating system and/or to download one of the supported browsers.
There are three common reasons for trouble with the Interactive Sky Chart:
1. If the Interactive Sky Chart shows you a black screen, check to see if you need a Java update: go to Java.com and click on "Do I have Java" to verify your Java version. Downloading a new or updated version of Java is free. Depending on your browser, you might need to activate the Java plug-in after updating.
2. if the "Change Location" button isn't working, check to make sure you don't have a "pop-up blocker" installed, which will block new browser windows from opening automatically. The "Change Location" button opens a new browser window.
3. You might have a problem with your Internet connection. This is especially likely if you are seeing pages on other Web sites load very slowly. We suggest you contact your Internet service provider in this case.