TV producer Robert H. Justman, who worked on two “Star Trek” TV series, died of complications from Parkinson’s disease May 28 in Los Angeles. He was 81.

His death came within days of his fellow “Trek” collaborators, director Joseph Pevney and composer Alexander Courage. His son Jonathan Justman told the L.A. Times, “There seems to be a big ‘Star Trek’ convention and everyone is going,” he said. “Everyone is getting beamed up.”

Robert Justman worked both the original “Star Trek” TV series and on “Star Trek: The Next Generation,” serving as associate producer, technical consultant and co-producer.

Born in Brooklyn, his father Joseph Justman owned Hollywood’s Motion Picture Center Studio, which later became part of Desilu Studios. Justman got his start at his father’s studio as a production assistant, assistant director and associate producer on features including “Kiss Me Deadly” and “Red Planet Mars” and on TV shows including “The Outer Limits” and “The Adventures of Superman.”

After his stint on “Star Trek,” he worked as a producer on shows including ‘Then Came Bronson,” “Search,” “MacGruder and Loud” and “Gideon’s Trumpet” until returning for “Star Trek: The Next Generation,” which ran from 1987 to 1994.

He is survived by his wife Jacqueline, three children, a brother, two sisters and five grandchildren.