The name is actually "Astronautalis," but one of his albums was labeled incorrectly in the CDDB index.
These are photos from concerts where Astronautilus played, so they may be of other bands that played the concert as well.
Astronautilus / The Smith Street Band Sep 7, 2017 Allston, Massachusetts, United States Uploaded by Treyj1234
Tegan and Sara / The Jezabels / Astronautilus May 13, 2010 Thebarton, South Australia, Australia Uploaded by Scotopic Lux