OpenAstronomyLog is a free and open XML schema definition for all kinds of astronomical observations. Software that supports this schema enables an observer to share observations with other observers or move observations among software products.
The schema (formerly known as COMAST schema) was primarily developed by the german "Fachgruppe für Computerastronomie" (section for computerastronomy) which is a subsection of Germany's largest astronomy union, VDS (Vereinigung der Sternfreunde e.V.) Starting with version 2.0 the schema was renamed from COMAST (abbr. for Computer Astronomy) to OpenAstronomyLog, or <OAL>.
Please see our wiki section as well as the doc folder
The schema is released under the APACHE Software License 2.0 and is currently supported in both open source and commercial software. Just download the schema archive!
In you want to contribute to <OAL> please join the OpenAstronomyLog discussion group.