Starlost was the early 70s, not post SW; it was originally supposed to be a new-tech special effects heavy series about a generation ship that suffered an accident and was knocked off course; the main characters rushed around to find the "backup bridge" to get the ship back on course even though they appeared amish. Keir dullea played the main character and walter koenig was in some of the later episodes. Harlan ellison and ursula leguin were involved but it because such a clusterfuck (and the effects that they ended up using were so awful) that they both dropped out (I believe).
my dad and I watched this when it originally aired and we were *so* excited because it was new sci-fi on teev! and then it seemed like it mostly just disappeared, although tantalizingly, bits and pieces would pop up here and there unexpectedly. It wasn't until the advent of the internet that I was actual able to verify that it wasn't a fever dream and that it actually existed.
the episodes are now on youtube and you can see them here:
there's a wiki entry:
it's a whole crazy story.
finding info about this was def recapturing part of my childhood.
one of the episodes even had GIANT BEES, which scared the shit out of me as a 5 year old...