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atmospheric turbulence News
Habitable Exoplanets to Be Studied with Help of AI and Photonics
SYDNEY, Oct. 23, 2020 — Researchers from the University of Sydney developed a sensor capable of correcting the distortion of starlight caused by heat variations in Earth’s atmosphere. The sensor would allow ground-based telescopes to study habitable exoplanets. The...
Optics Tools Advance in New Forms with Space Exploration
Jul 12, 2018 — With a new generation of large telescopes comes new challenges for optics. Some mirrors, for instance, must be large but flexible to perform wavefront correction and make the images as clear as possible. The shape of future optics will be different...
Keeping Optical Tables Steady
Oct 3, 2014 — Experimental results from a scanning laser Doppler vibrometer elucidate the effects of active vibration damping. Vibration presents a major challenge for precision experiments and manufacturing processes in optoelectronics. Optical tables and...
Stoking the star-maker machinery
Mar 1, 2011 — They’re making stars in Chile, Huck, and it did take a long time – about 10 years – but overnight on Jan. 21-22, there were five new stars in the Southern sky. You wouldn’t have been able to see them with your eyes, but they...
AOptix Awarded $11M in DARPA Contracts
CAMPBELL, Calif., Dec. 20, 2010 — Privately funded AOptix Technologies Inc. announced it received an $11.4 million contract to deliver wireless air and ground optical terminals for DARPA’s Free Space Optical Experimental Network Experiment program. Under subcontract to...
NSF Awards $1.72M to Keck I
KAMUELA, Hawaii, Sept. 22, 2010 — The W. M. Keck Observatory has received a $1.72 million grant from the National Science Foundation (NSF) to design the first near-infrared tip-tilt sensor used to correct for the turbulence in Earth’s atmosphere. The improvements will increase...
Taking the Twinkle Out of the Stars
TUSCON, Ariz., Aug. 4, 2010 — Star-gazers beware. Astronomers have developed a way to take the twinkle out of the night sky, but it’s really not as sinister as it may sound. Green guide star laser beams, used to sense turbulence in the atmosphere that badly degrades large...
Ultrafast Astronomical Camera
GARCHING, Germany, June 22, 2009 – The next generation of instruments for ground-based telescopes took a leap forward with the development of a new ultrafast camera that can take 1500 finely exposed images per second even when observing extremely faint objects.
Interferometric Measurements Set Requirements for Adaptive Optical Microscopy
Mar 1, 2005 — Adaptive optics has a record of success with regard to improving the performance of optical systems in high-aberration environments. Whether correcting for atmospheric turbulence, thermal gradients or aberrations in the cornea and lens of the human...
Simulation Tools Assess Laser Communications System Performance
Mar 1, 2003 — Bidirectional laser communications among ground and air- and spaceborne platforms holds promise of extremely high bandwidth data transfer in commercial and military applications. One challenge still to be met is optical-beam degradation from...
(10 results found)
May 2024
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