In 1973 scientists aboard a Concorde jet participated in an epic, continent-wide eclipse chase. A similar flight next year seeks to unravel enduring mysteries of the sun
. But solar researchers acknowledge that the flight only had a modest impact on our understanding of the sun.
In the late 1960s larger jet aircraft were designed to fly beyond the sound barrier, and the possibilities for solar science intrigued Liebenberg. “I organized a conference to discuss the possible use of the Air Force’s XB-70 supersonic jet for eclipse observations,” he says. The By January 1973 Liebenberg was preparing for the flight in Paris and Toulouse, and by April his specialty equipment had been built and delivered. “It was a remarkable process, with many hands to support us at the LANL,” he said, still grateful five decades later. Portholes were carved into Concorde 001’s skin to accommodate the cameras, and the unneeded passenger seats were stripped to make room for equipment.
As planned, the team were the first to capture long-duration images of the rhythmic pulsing of the corona’s light. “Our results provided the first indication of a five-minute periodicity,” Liebenberg says.of the successful flight. Newspapers around the world printed the eclipse images and a short French documentary was made from the footage.
or x-ray wavelengths and scans with coronagraphs that block the sun’s disk, such as on the Inouye Solar Telescope in Hawaii. But there’s still an important role for infrared imagery, which can capture details that are not visible in other wavelengths, such as superheated dust grains that swirl around the sun.a large-aperture solar tracking instrument for the Gulfstream V.
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