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Colorado scientists pitch concept for telescope better than Hubble

"Traditionally, space telescopes have essentially been monolithic pieces of glass," said Anthony Harness.

By Brooks Hays
An illustration of what Aragoscope might look like as it orbits Earth. Photo by CU-Boulder/NASA.
An illustration of what Aragoscope might look like as it orbits Earth. Photo by CU-Boulder/NASA.

BOULDER, Colo., Jan. 26 (UPI) -- In the world of telescopes, it doesn't get much better than Hubble's resolution. The Hubble Space Telescope has provided astronomers with some of the most detailed images of distant space ever captured.

But there's always room for improvement. And scientists at the University of Colorado, Boulder say they've got a strategy for honing in ever more precisely on the distant corners of the cosmos. The concept, researchers say, could provide scientists with images up to 1,000 times sharper.

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It's not necessarily the massive amplification is picture quality that's impressive, but the strategy for getting there -- foregoing a single telescope satellite for a two-piece system. The concept, called Aragoscope, would feature a massive disc (up to a half-mile in diameter) floating out in front of a more traditional telescope setup.

"Traditionally, space telescopes have essentially been monolithic pieces of glass like the Hubble Space Telescope," explained Anthony Harness, a doctoral student in Colorado's Department of Astrophysical and Planetary Sciences.

"But the heavier the space telescope, the more expensive the cost of the launch," Harness added. "We have found a way to solve that problem by putting large, lightweight optics into space that offer a much higher resolution and lower cost."

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The giant disc would be made of a hard, durable plastic that could be launched in a compressed form and unfurled like a parachute once in space. The disc would be tethered to the telescope and spread out anywhere from ten to a few hundred miles beyond the base of the satellite.

The disc would operate by refracting light and bending it around its corners to a central point where it could be concentrated on the telescope and converted into high-res imagery. The bigger the lens the better the image.

"The opaque disk of the Aragoscope works in a similar way to a basic lens," said Harness.

When pointed towards the the other reaches of the galaxy, researchers predict that it would highlight the mysteries of black holes and binary star systems. If its gaze was fixed on Earth, it would be powerful enough to spot a rabbit running across a field and could potentially help park rangers locate lost hikers.

The concept -- named for French scientist Francois Arago -- is being developed by Harness and CU-Boulder Professor Webster Cash. It is one of 12 proposals that was chosen for research funding as part of the NASA Innovative Advanced Concept (NIAC) contest. In April, officials at NASA will choose six of the proposals for additional funding.

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