The Journey to Palomar is getting some coverage in advance of its TV premiere next week. The website for Sky & Telescope magazine has an article on the show that includes an audio interview with the filmmakers and an extended preview of the film. Check it out.
There is also an article about the 200-inch mirror in the December issue of Sky & Telescope, but I haven't seen it yet.
Here's a story on the movie from the Chicago Sun-Times.