What is the size of the Kitt Peak and Sacramento Peak NM telescopes and their focal length?
The McMath Pierce Telescope on Kitt Peak has an aperture of 1.51 meters and focal length of 82.62 meters. The Kitt Peak vacuum telescope has an aperture of 0.7 meters and a focal length of 36.4 meters. The Dunn telescope at Sac Peak has an aperture of 0.76 m and a focal length of 180 feet TEMPERATURE OF THE SUN QUESTION: How do you measure the temperature of the Sun? Ms. Hammonds’ Class Rancho Santa Fe, CA ANSWER: Hmmm… That’s a good question. We can’t put a thermometer on the surface of the Sun, but we can detect the color it glows at. Whenever anything in the universe is heated, it glows at a particular color that doesn’t depend on what the stuff is made of. So a red-hot coal is the same temperature as a red-hot stove, which is the same temperature as anything else that’s glowing that particular color of red. We can measure the exact color of the surface of the Sun and that tells us very precisely what temperature it is. The surface of the Sun is just under 6,000 degrees Kelvin, wh
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