Information about visa types and application can be found on the website of the German Federal Foreign Office.
If you need a visa, please make sure to apply sufficiently in advance. Depending of your country of origin, applications can take 2-3 months.
A Schengen visa will allow you to cross the boarder into Poland (a short stroll across one of the bridges in Görlitz), a German national visa will only allow you to travel within Germany. EU passport holders can freely move between Germany and Poland. The same applies to Canadian and US citizens.
Please make sure to carry your passport at all times.
If you need an official invitation letter for your visa application, please contact us at your earliest convenience by email to adass2025.conference@dzastro.de