Conversation so far:
Who is Stan Brakhage?
Brakhage began to receive recognition in exhibitions and film publications, including Film Culture, which gave awards to several of his films.
What did Brakhage do in the 1960s?
From 1961 to 1964, Brakhage worked on a series of 5 films known as the Dog Star Man cycle.

Question: When was Brakhage recognized?
Self-contained rewrite: When was Stan Brakhage recognized?