38, This is a close up of the elevator carriage that rides along the curved track that is approximately concentric with the center of the dome. This geometry means that the end of the elevator can be moved to within about 10 inches of the prime focus observers' cage no matter where the telescope is pointed. There is a gear train on this carriage that makes sure the elevator walkway always stays level. - photorick
The 200” Hale telescope is the forth in a series of large telescopes that George Hale envisioned and was the driving force that made those projects successful. He built the largest telescope in the world four times in a row! At the start of this project in 1938 there were several major inventions required to even make a telescope of this size possible. There are several books that chronicle the fascinating story of the construction of this telescope that are worth reading. This is a selection of photos from two visits to Palomar in the early 90’s. On the second visit I was privileged to spend three nights with astronomers as they worked on two projects related to proper motion of stars and a quasar hunt.