Mr. Laser Beam wrote:
They used an old plastic model kit to show the (non-remastered) Constellation, didn't they?
Yes, while the shots from the front weren't too bad, the rear shots were awful, the lack of detail on the impulse engines and rear (undamaged) nacelle made it very obvious this was just a cheap model thrown together for the show.
Again, it probably wasn't a big deal on the small TV's in the 60's but I remember watching the re-runs in the 70's and it was very noticeable.
I think the remastered version of The Doomsday Machine did an excellent job with the CGI Constellation.