Scanning the Skies: The Discovery Channel Telescope

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Size really matters in the competitive world of astronomy. To capture sharp images of objects millions of light years away requires big thinking, so Lowell Observatory in Arizona has spent $53 million and taken eight years to assemble the 10,000 moving parts of a new telescope. Discovery can be forgiven for tooting its own trumpet, having shelled out a third of the cost of the “DCT”, and tells the gulp-inducing story of its construction with superb clarity. The 4.3m-wide primary mirror alone took seven years to make, and had to be moved 2,700 miles. It’s a huge tale in which microscopic things can scupper an entire project.


A look at the construction and science behind the Discovery Channel telescope, featuring expert interviews.


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