Captain Video and His Video Rangers is an American science fiction television series, which was aired on the DuMont Television Network, and was the first series of its kind on American television.
The series aired between June 27, 1949 and April 1, 1955, originally Monday through Saturday at 7 p.m. ET, and then Monday through Friday at 7 p.m. ET. A separate 30-minute spinoff series, The Secret Files of Captain Video, aired Saturday mornings, alternating with Tom Corbett, Space Cadet, from September 5, 1953 to May 29, 1954 for a total of 20 episodes.
Even for its time, the quality of the show is often considered crude or low-budget, owing much to the fact that the show was done live and DuMont had a meager budget to work with. In the early days of the series, the show featured often incoherent and nonsensical scripts, along with jarring plot shifts to old cowboy movies. This improved after 1952 when scripts were written by major science fiction writers active at the time, including Damon Knight, James Blish, Jack Vance and Arthur C. Clarke. These late scripts displayed more intelligence, discipline and imagination than most of the other children's sci-fi series scripts of the era.
Few special effects were seen on the series until the team of Russell and Haberstroh was hired in September 1952. For the rest of the program's episodes, they provided surprisingly effective model and effects work, prefilmed in 16 mm format and cut into the live broadcast as needed. (Source: wikipedia.org)