Planet Mars, as seen through the Palomar Observatory 200-Inch Telescope
Mount Wilson and Plaomar Observatories Mars in blue and red light. Cat # 276 Taken with Palomar Observatories 200 inch telescope.
July 13, 2015
| Credit | Carnegie Institution for Science |
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Astronomers using the 200-inch telescope at the Palomar Observatory in California took these two images of Mars around 1956. They took the image on the left hand side through a blue filter, which allowed them to see the atmosphere and the clouds circling the planet. They took the image on the right through a red filter, which allowed them to see details of the planet, such as the dark area and polar ice caps.
