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Palomar Skies: March 2009
telescope | History, Types, & Facts | Britannica
The 200-inch Hale Telescope
Hale Telescope - Wikipedia
Zeiss Telescopes - Griffith Observatory - Southern California's gateway to the cosmos!
astronomical optics, part 2: telescope & eyepiece combined
Amazon.com : Celestron – StarSense Explorer DX 130AZ Smartphone App-Enabled Telescope – Works with StarSense App to Help You Find Stars, Planets & More – 130mm Newtonian Reflector – iPhone/Android Compatible : Electronics
telescope | History, Types, & Facts | Britannica
Palomar Skies: March 2009
ÈPhotograph of the Palomar Testbed Interferometer (PTI) at Palomar... | Download Scientific Diagram