Daniel Haller
From Battlestar Wiki, the free, open content Battlestar Galactica encyclopedia and episode guide
Daniel Haller (b. 1926) was a television and film director from the 1960s to 1980s. He is sometimes credited as "Danny Haller" or "Dan Haller". Besides directing, Haller was also an art director, producer, and production designer.
Haller worked on the original Battlestar Galactica and Galactica 1980. He directed the episode "Space Croppers".
References
Daniel Haller at the Internet Movie Database