Circular postcard showing a view inside Rodney Graham''s traveling camera obscura when it was parked in Dan Graham''s Rooftop Urban Park facing the two-way mirrored glass pavilion for the exhibition entitled "Time Traced" at the Dia Center for the Arts from October 1999 - June 2000. The image presents a double edged experience of spectatorship in which Dan Graham''s bodily based notions of perception are in conversation with the camera obscura''s thoroughly disembodied model.