![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
![Mirror to Discovery: The 200-Inch Disk and the Hale Reflecting Telescope at Palomar | Corning Museum of Glass Mirror to Discovery: The 200-Inch Disk and the Hale Reflecting Telescope at Palomar | Corning Museum of Glass](https://whatson.cmog.org/sites/whatson.cmog.org/files/styles/max_width_1920/public/media/images/Rakow_1000093965_GRAY-apd.jpg?itok=Ffe1V-Mn)
Mirror to Discovery: The 200-Inch Disk and the Hale Reflecting Telescope at Palomar | Corning Museum of Glass
![Mt. Palomar Telescope Pyrex Mirror Blank in the May 29, 1948, edition of the Saturday Evening Post - RF Cafe Mt. Palomar Telescope Pyrex Mirror Blank in the May 29, 1948, edition of the Saturday Evening Post - RF Cafe](https://www.rfcafe.com/miscellany/cool-pics/images/Mt-Palomar-Mirror-Corning-Pyrex-Saturday-Post-May-29-1948.jpg)