![4.2. The Hooker Telescope (2.5m) used by Edwin Hubble for the discovery... | Download Scientific Diagram 4.2. The Hooker Telescope (2.5m) used by Edwin Hubble for the discovery... | Download Scientific Diagram](https://www.researchgate.net/publication/261993744/figure/fig2/AS:392437475364868@1470575793137/2-The-Hooker-Telescope-25m-used-by-Edwin-Hubble-for-the-discovery-of-the-expansion.png)
4.2. The Hooker Telescope (2.5m) used by Edwin Hubble for the discovery... | Download Scientific Diagram
![Mount Wilson Observatory on X: "This is what the 100" primary mirror sees when the mirror shutter opens. A rare view of the Hooker telescope's interior, secondary, and tertiary mirrors courtesy of Mount Wilson Observatory on X: "This is what the 100" primary mirror sees when the mirror shutter opens. A rare view of the Hooker telescope's interior, secondary, and tertiary mirrors courtesy of](https://pbs.twimg.com/media/EyAoW30VEAE4cq_.jpg)
Mount Wilson Observatory on X: "This is what the 100" primary mirror sees when the mirror shutter opens. A rare view of the Hooker telescope's interior, secondary, and tertiary mirrors courtesy of
![File:The One Hundred Inch Hooker Telescope - Mt Wilson Observatory, California(GN03572).jpg - Wikimedia Commons File:The One Hundred Inch Hooker Telescope - Mt Wilson Observatory, California(GN03572).jpg - Wikimedia Commons](https://upload.wikimedia.org/wikipedia/commons/7/7d/The_One_Hundred_Inch_Hooker_Telescope_-_Mt_Wilson_Observatory%2C_California%28GN03572%29.jpg)
File:The One Hundred Inch Hooker Telescope - Mt Wilson Observatory, California(GN03572).jpg - Wikimedia Commons
![HOOKER TELESCOPE shortly after its completion at the Mount Wilson Observatory in Los Angeles County in 1917 Stock Photo - Alamy HOOKER TELESCOPE shortly after its completion at the Mount Wilson Observatory in Los Angeles County in 1917 Stock Photo - Alamy](https://c8.alamy.com/comp/DT4DFC/hooker-telescope-shortly-after-its-completion-at-the-mount-wilson-DT4DFC.jpg)
HOOKER TELESCOPE shortly after its completion at the Mount Wilson Observatory in Los Angeles County in 1917 Stock Photo - Alamy
![This Month in Astronomical History: 100 Years for the Hooker Telescope | American Astronomical Society This Month in Astronomical History: 100 Years for the Hooker Telescope | American Astronomical Society](https://aas.org/files/astro-history-november-hooker-telescope-caption.png)