It has been a while since I posted an advertisement featuring Palomar Observatory.
This full-page magazine ad for Kodak film ran in back in 1948 or 1949 sometime after the dedication of the 200-inch telescope.
Kodak produced the photographic plates that were used at Palomar for years. The last photographic plate shot with the Hale Telescope was taken in 1989. We continued to use Kodak plates for the Second Palomar Observatory Sky Survey, performed with the 48-inch Schmidt (aka the Samuel Oschin Telescope) all the way up to the year 2000.
The first CCD photography at Palomar began in the 1970s and everything is 100% digital now. Of course our reach into space is a lot farther now than the "billion light years" quoted in the ad.