The concept appeared again for the Apollo moon landings. To save weight the colour camera on Apollo 12 and subsequent missions was single tube with a colour wheel. Apollo 11 had a monochrome camera.
Looking at this article it seems my memory was only partially correct:
https://en.wikipedia.org/wiki/Apollo_TV_camera
A12 was the first mission to bring a colour camera to the lunar surface. A10 onwards carried a colour camera.
Back in the late 1960s/early 1970s electronic framestores didn't exist so conversion to NTSC was almost as hard as it was for the chromacoder.
Again I've realised that my memory is faulty. Framestores did exist by then. The 2 examples I know of are the BBC's analogue PAL<>NTSC converter from 1968 and the IBA's DICE converter where development started in 1971. The former used quartz delay lines, the latter used early DRAM.