Hobby-Eberly Telescope


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Hobby–Eberly Telescope

(hob -ee eb -er-lee) (HET) A telescope at the McDonald Observatory in Texas, used mainly for spectrographic surveys. It has an 11-meter segmented spherical mirror (f/1.3, with an effective aperture of 9.2 meters) on an altazimuth mounting, tipped at a permanent angle of 35° to the zenith. A movable secondary mirror reflects images onto it, and in this way it can survey 70% of the sky visible at the site. It was commissioned in 1997.
Collins Dictionary of Astronomy © Market House Books Ltd, 2006
References in periodicals archive ?
As mentioned in Section 1 the Hobby-Eberly Telescope Dark Energy Experiment (HETDEX) will use the VIRUS instrument to conduct a blind spectroscopic survey covering an effective area of ~90 [degrees.sup.2].
The find comes out of the Hobby-Eberly Telescope Massive Galaxy Survey (MGS).
The Southern African Large Telescope (SALT) is an evolution of the Hobby-Eberly Telescope (HET) at McDonald Observatory in Texas, USA.
To date, astronomers have discovered nearly 700 planets orbiting stars in our galaxy (with billions suspected), but they have probed the atmospheres of only a handful, using space telescopes and the largest ground-based telescopes such as the Hobby-Eberly Telescope (HET).
To determine the blazar's distance, the team then took visible-light spectra with the Hobby-Eberly Telescope in Fort Davis, Texas.
With the 10-meter Hobby-Eberly Telescope in Texas we obtained spectra throughout the 4.6-hour orbit.
Using the Hobby-Eberly Telescope, the astronomers observed the planets' parent stars - called HD 240237, BD +48 738, and HD 96127 - tens of light years away from our solar system.
The SALT SAC is substantially different from that of HET (the Hobby-Eberly Telescope in Texas, which acted as a prototype for SALT) and most importantly has a much higher optical specification.
McArthur and her team used data from Hubble Space Telescope (HST), theiant Hobby-Eberly Telescope, and other ground-based telescopes combined with extensive modeling to unearth a landslide of information about the planetary system surrounding the nearby star Upsilonndromedae.
Low-resolution spectra taken at the Hobby-Eberly Telescope in Texas suggest orbital motion, yielding a combined blackhole mass of at least 150 million Suns.