Our society International Amateur Observatory (IAS) celebrates it's 25th anniversary in 2025. On this occation we're issuing a new anniversary publication, documenting the development of the IAS from the formation in 1999 until the anniversary year 2024.
Available as a PDF download for interested parties and members here. [German version]
Many thanks to Rainer Glawion und Werner Roßnagel for their tireless work as editors.