Donated Spy Satellite Telescope Would Suit NASA Dark Energy Mission, Report
Finds

*by Miriam Kramer*
*SPACE.com Staff Writer*

*Date: 04 June 2013 Time: 04:06 PM ET*
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*http://www.space.com/21434-nasa-spy-satellite-telescope-wfirst.html
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[image: Hubble Space Telescope, an icon in
space.]<http://pinterest.com/pin/create/button/?url=http%3A//www.space.com/21434-nasa-spy-satellite-telescope-wfirst.html&media=http://i.space.com/images/i/000/007/778/original/ig390-hubble-1-02.jpg?1296060396&description=The%20Hubble%20Space%20Telescope%20got%20one%20last%20overhaul%20in%20May%202009%20by%20NASA%20astronauts%20on%20the%20space%20shuttle%20Atlantis%20and%20has%20been%20sending%20home%20stunning%20new%20photos%20ever%20since.%20Seen%20here%2C%20the%20iconic%20space%20telescope%20orbits%20high%20above%20the%20Earth%2C%20after%20it%20was%20released%20at%20the%20close%20of%20the%20STS-125%20servicing%20mission%20to%20once%20more%20gaze%20deep%20into%20the%20universe.%20>The
Hubble Space Telescope got one last overhaul in May 2009 by NASA astronauts
on the space shuttle Atlantis and has been sending home stunning new photos
ever since. Seen here, the iconic space telescope orbits high above the
Earth, after it was released at the close of the STS-125 servicing mission
to once more gaze deep into the universe.
CREDIT: NASA

INDIANAPOLIS — NASA could use a donated spy satellite telescope to carry
out a high-priority mission that would hunt for alien planets and
mysterious dark energy, a new report found.

Not only would one of two donated U.S. National Reconnaissance Office (NRO)
telescopes suit the mission of NASA's proposed Wide-Field Infrared Survey
Telescope<http://www.space.com/19240-nasa-spy-satellite-telescopes-dark-energy.html>
(WFIRST)
— it would boost the mission's capabilities without much exceeding its
expected $1.63 billion budget, according to a study released on May 23.

The results of the study, known as WFIRST-AFTA (Astrophysics Focused
Telescope Assets), were presented here today (June 4) at the 222nd meeting
of the American Astronomical Society. [Declassified U.S. Spy Satellites
Gallery<http://www.space.com/12997-photos-declassified-spy-satellite-pictures.html>
]

"For approximately the same cost … the use of these telescope assets would
enable a WFIRST mission that has significantly improved scientific
capabilities," Paul Hertz, the director of the astrophysics division of
NASA's science mission directorate, said during the conference.

"In addition, the use of these telescope assets would enable us to add an
exoplanet-imaging instrument to a WFIRST mission that would be able to
image and characterize planets around nearby stars," Hertz added.

NASA announced last June that it had received the discarded NRO scopes,
which are similar in size and appearance to NASA's iconic Hubble Space
Telescope <http://www.space.com/15892-hubble-space-telescope.html>,
sporting 8-foot-wide (2.4 meters) primary mirrors. However, the NRO
telescopes<http://www.space.com/20955-nasa-spy-satellite-telescopes-missions.html>
are
designed to have a wider field of view, making it possible to survey a
bigger swath of the sky with them, NASA officials have said.

Last November, NASA asked scientists to propose uses for the donated
telescopes, which are far from flight-ready spacecraft. (They're basically
just primary and secondary mirrors with associated support structures.)

The most promising ideas (apart from use in WFIRST) were presented in
February at the SALSO (Study on Applications of Large Space Optics)
workshop in Huntsville, Ala. These concepts were categorized into seven
areas:

   - Mars-orbiting space telescope
   - Exoplanet observatory
   - General-purpose faint object explorer
   - Advanced, Hubble-like visible light/ultraviolet telescope
   - Optical communications node in space (which would aid transmissions to
   and from deep-space assets)
   - Geospace dynamic observatory (which would study space weather and the
   sun-Earth system)
   - Research of Earth's upper atmosphere (from a spot aboard the
   International Space Station)

The WFIRST-AFTA study's findings on the possibility of using an NRO
telescope for WFIRST were presented to NASA chief Charlie Bolden on May 30.
The study was carried out by an independent group of scientists led by
David Spergel of Princeton University and Neil Gehrels of NASA's Goddard
Space Flight Center. Bolden has directed agency officials to continue to
"pre-formulate" the plan, Hertz said.

No official decision governing the future of the two telescopes has been
made, Hertz added.
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