^Thanks for the explanation. Yeah, Filmation did a lot of in-camera, latent-image FX work rather than using an optical printer. On Space Academy
in 1978 they did some impressive in-camera compositing with miniatures for their space shots. In the following year's Jason of Star Command
, they upgraded to bluescreen mattes, which gave them more flexibility in how the ships moved and interacted, but looked a lot worse in some ways because of the obvious matte lines.