It has been released into the public domain (see Lizenz:). You may use it for any purpose.

Request:
Should you choose to use this image outside any of the Wikimedia projects; on your personal website, for instance — I would appreciate it (however, this is not a requirement) if you left a notice on my talk page and / or attributed it “Photo: Anders Einar Hilden” (the word “Photo” may be translated, changed or left out).