Watch Thousands of Dancing Robots Combine on Dark Energy Instrument (Video)

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Watch Thousands of Dancing Robots Combine on Dark Energy Instrument (Video)









    [youtube https://www.youtube.com/watch?v=g1LVMox0KNc]



		Study what is accelerating. the expansion of our universeScientists will use a new experiment with choreographed robots to observe millions of galaxies every 20 minutes.

		In a video released on October 4 For the Berkeley lab at the University of California, engineers explained the ingenuity behind the Dark Energy Spectroscopic Instrument (DESI). They described DESI as a crazy machine made of mechanical flower petals that, together, can make a great study of the cosmos.

		The archival material gives viewers a behind-the-scenes look at the hardware assembly. "It's really exciting to work on it," DESI Focal Plane's lead engineer Joseph Silber said in the video.

The[[Bringing dark energy to light]





						


Traces of stars surround the dome of the Mayall Telescope in this long exposure image. The telescope is located at the Kitt Peak National Observatory near Tucson, Ariz. DESI, or the Dark Energy Spectroscopic Instrument, will be installed inside this dome. 

            						    Credit: P. Marenfeld and NOAO / AURA / NSF. Lawrence Berkeley National Laboratory, copyright 2010 by the Regents of the University of California, through the Lawrence Berkeley National Laboratory. 


		The galaxies are like the lampposts of the universe, the dark energy researcher Peter Behroozi said in a previous Berkeley Lab video about DESI. None dark energy However, neither dark matter emits light, so looking at objects that generate optical points will help researchers learn about what is not seen, said Behroozi. 

		DESI will create a 3D celestial map to "point out the nature of dark energy", Stéphanie Juneau, project scientist at the National Observatory of Optical Astronomy (NOAO) Data Lab said in the previous video. 





						


Claire Poppett, a leading fiber scientist for DESI, works with a team of engineers to prepare fibers for future data measurements. This is a picture of a video from October 4 at Berkeley Lab explaining the laboratory fusion technique.

            						    Credit: Marilyn Chung / Berkeley Lab 


		DESI is a rapid cycling survey, and Silber said that the speed of the instrument is possible thanks to the 5,000 individual fiber positioning robots. Each one sees the position of a galaxy, and after 20 minutes, the 5,000 robots move to new targets. 

		Ten wedge-shaped sections called petals contain 500 of these robots each. An individual wedge covers 36 degrees, and together, the petals make up the 360-degree focal plane of DESI. The instrument will be mounted near the top of the Mayall Telescope at the Kitt Peak National Observatory near Tucson, Arizona.     

		The observations obtained by the fibers need a way to carry that information, so they are fused with a larger cable that carries the information to the spectroscopes that measure the light. 

		"We expose the glass filaments and then heat them in a very precise way to make that connection without losses in terms of optical quality ... or any degradation of light," said Claire Poppett, leading fiber scientist at DESI.

		And to further guarantee the pristine quality of the instrument, the air that flows into the assembly area comes in parallel lines. Known as laminar air flow, this type of air movement keeps pollution and dust at bay by preventing them from spinning in the room.



	Follow Doris Elin Salazar on Twitter@salazar_elin. Follow us @Spacedotcom, Facebook Y Google+. Original article about Space.com.



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