Hobby-Eberly Telescope Dark Energy Experiment Fiber Optic Testing System

Details Hobby-Eberly Telescope Dark Energy Experiment Fiber Optic Testing System Hobby-Eberly Telescope Dark Energy Experiment Fiber Optic Testing System

Jan 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011aas...21743209f&link_type=abstract

American Astronomical Society, AAS Meeting #217, #432.09; Bulletin of the American Astronomical Society, Vol. 43, 2011

Astronomy and Astrophysics

Astronomy

Scientific paper

The Hobby-Eberly Telescope Dark Energy Experiment (HETDEX) is a spectroscopic survey that will collect data from nearly one million Lyman-α emitting galaxies at a redshift of 1.8 < z < 3.8 in order to characterize dark energy. To accomplish this, over 33,000 optical fibers will feed light from these galaxies into 150 Visible Integral-Field Replicable Unit Spectrographs (VIRUS), an order of magnitude greater than has been done before. A fiber optic test bench has been constructed at the University of Texas at Austin in order to test the transmission and focal ratio degradation (FRD) of individual fibers at several wavelengths ranging from 350-600nm. Furthermore, the fiber optic bundles are undergoing extensive lifetime tests at the Center for Electromechanics on the university’s research campus which will simulate 10 years of motion on the Hobby-Eberly Telescope.

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