![Seen from above after its old film of aluminum has been removed, Palomar Observatory's 200" Hale telescope mirror shows its internal honeycomb-like structure - Digital Commonwealth Seen from above after its old film of aluminum has been removed, Palomar Observatory's 200" Hale telescope mirror shows its internal honeycomb-like structure - Digital Commonwealth](https://bpldcassets.blob.core.windows.net/derivatives/images/commonwealth:dz011169s/image_access_800.jpg)
Seen from above after its old film of aluminum has been removed, Palomar Observatory's 200" Hale telescope mirror shows its internal honeycomb-like structure - Digital Commonwealth
![Multimedia Gallery - The 200-inch Hale Telescope at Palomar Observatory. | NSF - National Science Foundation Multimedia Gallery - The 200-inch Hale Telescope at Palomar Observatory. | NSF - National Science Foundation](https://www.nsf.gov/news/mmg/media/images/palomar3_h.jpg)
Multimedia Gallery - The 200-inch Hale Telescope at Palomar Observatory. | NSF - National Science Foundation
![Caltech Archives and Special Collections on Twitter: "Exactly 70 years ago #OTD on June 3 1948, the 200” Hale telescope was dedicated on Palomar Mountain. This extraordinary instrument was the vision of Caltech Archives and Special Collections on Twitter: "Exactly 70 years ago #OTD on June 3 1948, the 200” Hale telescope was dedicated on Palomar Mountain. This extraordinary instrument was the vision of](https://pbs.twimg.com/media/De0dOiBVAAE18kr.jpg)
Caltech Archives and Special Collections on Twitter: "Exactly 70 years ago #OTD on June 3 1948, the 200” Hale telescope was dedicated on Palomar Mountain. This extraordinary instrument was the vision of
![Next Generation Palomar Spectrograph for the Hale 5m Telescope-The Kavli Institute for Astronomy and Astrophysics at Peking University (KIAA-PKU) Next Generation Palomar Spectrograph for the Hale 5m Telescope-The Kavli Institute for Astronomy and Astrophysics at Peking University (KIAA-PKU)](https://kiaa.pku.edu.cn/__local/5/07/09/97E9B6198BD71C218FDBF5F332C_6A7E9BB4_A7FE6.png)