A table of countries whose citizens require/do not require visas to enter Germany can be found here.
Comprehensive information, application forms, time required, fees, etc. can be found here.
Formal Acceptance Letter via Email
If you need a VISA, you may generate a formal paper acceptance letter complete with letterhead. You will need your paper number and password. Click here to create the PDF.
Official Invitation Letter via Email
All registered persons whose payment has been received by the IGARSS 2012 office can request an official invitation letter that confirms registration. If you have already registered, you may request this letter at this link.
Official Invitation Letter via Post
If you require a hardcopy invitation letter sent to you by mail, please note that during online registration you should check the box to request e-mailed hardcopy invitation letter. There is a fee of 15 Euro for this option, which covers the mail postage. Note that there is no fee for the emailed version of the official invitation letter.