From the “about” page:
The Internet provides an incredible platform for astronomers and astrophysical research. .Astronomy (pronounced ‘dot-astronomy’) aims to bring together an international community of astronomy researchers, developers, educators and communicators to showcase and build upon these many web-based projects, from outreach and education to research tools and data analysis.
.Astronomy events are held (almost) once a year. The most recent was in Heidelberg in July 2012. These meetings bring people together to talk, make and do cool stuff for just a few days. The events are focused, but informal, and encourage collaboration on new ideas that can benefit astronomy in a variety of ways.
Presentations from .Astronomy 4 and other resources.
For example: Julie Steele and Noah Iliinsky: How to be a Data Visualisation Star
Has a pointer to: Properties and Best Uses of Visual Encodings by Noah Iliinsky.
Be sure to grab Noah’s chart (PDF) and print it out (on a color printer)
Julie and Noah are the authors of:
Beautiful Visualizations: [looking at data through the eyes of experts]
Highly recommended, along with the other presentations you will find here.