Unproceedings of .Astronomy 4

We’re very pleased to present the Unproceedings of the Fourth .Astronomy Conference (.Astronomy 4), which was held in Heidelberg, Germany, July 9-11 2012. The goal of the .Astronomy conference series is to bring together astronomers, educators, developers and others interested in using the Internet as a medium for astronomy. Unproceedings of .Astronomy 4