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Topic: Hobby-Eberly Telescope

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Hobby-Eberly Telescope The HET is the first large optical telescope designed and built for spectroscopy. The HET was designed to gather a large amount of light specifically for spectroscopy, and to be built at extremely low cost. The HET entered its commissioning phase in 1997, and began science operations in October of 1999. www.as.utexas.edu /mcdonald/het/het.html   (319 words)

Hobby Hobby-Eberly Telescope The Hobby-Eberly Telescope at the McDonald Observatory is primarily used for spectrography. Hobby store A store is a place dedicated to the selling of things that people usually employ for their personal satisfac... Hobby (bird) A hobby is a fairly small, very swift falcon with long, narrow wings. www.brainyencyclopedia.com /topics/hobby.html   (144 words)

McDonald Observatory - Wikipedia, the free encyclopedia The Hobby-Eberly Telescope, dedicated in late 1997, is located on the summit of Mount Fowlkes at 6,659 feet above sea level. (The Hobby-Eberly Telescope is seen in the foreground.) The Otto Struve Telescope and the Harlan J. Smith Telescope are located on Mount Locke at an altitude of 6,791 feet. en.wikipedia.org /wiki/McDonald_Observatory   (283 words)

Hobby-Eberly Telescope - Encyclopedia, History, Geography and Biography The Hobby-Eberly Telescope (30.681° N 104.015° W) at the McDonald Observatory is primarily used for spectography. The main task of the Hobby-Eberly Telescope is finding extrasolar planets by looking at the radial velocity variations of stars. When combined with the fibre optic coupled high resolution spectrograph, it can measure stellar radial velocities with resolutions down to 1m/s. www.arikah.net /encyclopedia/Hobby-Eberly_Telescope   (118 words)

Hobby-Eberly Telescope The Hobby-Eberly Telescope is also the first optical telescope that will use a system of smaller mirrors as a moveable "tracker" to point the telescope, instead of moving the entire instrument, including the primary mirror. The Hobby-Eberly Telescope, one of the world's largest and most powerful optical telescopes, is being dedicated this morning by the consortium of U.S. and German universities that built it. "Stanford is very pleased to be involved in the Hobby-Eberly Telescope (HET) project. www.xs4all.nl /~carlkop/hobby.html   (947 words)

University of Texas at Austin Development Office Hobby became involved with the telescope almost a decade ago, as he was preparing to leave the lieutenant governor's office after 18 years. Hobby, who has a longtime interest in astronomy and had often visited the observatory, was intrigued. Daughter Laura Hobby Beckworth graduated from the School of Law in 1983 and belongs to the Littlefield Society, UT Press Advisory Council, and Chancellor's Council. www.utexas.edu /supportut/news_pub/fall97_telescope.html   (1119 words)

Hobby-Eberly Telescope The Hobby-Eberly telescope (HET) is a 9 meter telescope being built by an international collaboration between the University of Texas at Austin, The Pennsylvania State University and Stanford University in the United States and Ludwig-Maximilians-Universitaet Muenchen, and Goerg-August-Universitaet Goettingen in Germany. The HET is named in honor of its principal benefactors, Lt. Governor William P. Hobby of Texas and Robert E. Eberly of Pennsylvania. During an observation the telescope is fixed in azimuth and objects are tracked by moving a spherical aberration corrector to follow the reflected light. www.astro.psu.edu /users/lwr   (932 words)

Revolutionary New Hobby-Eberly Telescope Opens Today Thus, the Hobby-Eberly Telescope is effectively the third-largest telescope in the world, after the twin 10-meter (393-inch) Keck I and Keck II telescopes in Hawaii. The primary mirror of the Hobby-Eberly Telescope is composed of 91 separate one-meter (39.37 inch) hexagonal mirrors, aligned by small computer-controlled motors to act as a single 11-meter (433-inch) light-gathering surface. The Hobby-Eberly Telescope is set in place to point at a given area of the sky prior to an observation period. www.sciencedaily.com /releases/1997/10/971007071143.htm   (934 words)

Hobby-Eberly Telescope is human ingenuity at best The Hobby-Eberly Telescope, officially dedicated and open for business at the University of Texas at Austin's McDonald Observatory in Fort Davis, is a scientific landmark, a milestone in engineering. People do." And it was people who produced the Hobby-Eberly Telescope, starting with the visionary, Harlan Smith. This telescope, which bears my family name and the name of Penn State donor Robert Eberly, should help unlock the mysteries of black holes and dark matter, providing more clues to the origin of our universe. www.chron.com /content/chronicle/editorial/97/10/28/hobby.0-0.html   (650 words)

news.html The Hobby-Eberly Telescope is the world's first major telescope designed primarily for spectroscopy, which measures and analyzes individual wavelengths of light to reveal detailed information about stars, galaxies and other astronomical objects. The HET is the third largest telescope in the world, after the Keck telescopes, and was built by a partnership of five universities: the University of Texas at Austin; Penn State; Stanford University; and two German universities, Georg-August University in Goettingen and Ludwig-Maximilians University in Munich. His sister, Carolyn Eberly Slaney, said at the dedication that her family is extremely proud of the HET project. www.psu.edu /ur/archives/intercom_1997/Oct16/news.html   (1500 words)

First-Light declared at Hobby-Eberly Telescope (12/96) Another cost-saving feature is that, in contrast to most telescopes, the HET tracks objects as they move across the night sky not by rotating the entire telescope but by moving just a few focusing instruments suspended above the primary mirror. The largest and most powerful optical telescope in the continental United States has just taken its first look at the universe, demonstrating the feasibility of its novel design and ushering in a new era of cost-effective large telescopes. The telescope's schedule will be computer controlled to allow many different types of observations to be made in a single night. www.stanford.edu /dept/news/pr/96/961212firstlight.html   (619 words)

Origins of the universe: McDonald Observatory director traces a star-studded history that includes UT Austin's Hobby-Eberly telescope and its ability to study bright starts of nearby galaxies. 05/2000 A telescope is a time machine, and the light to see the Andromeda galaxy, M31, left there 2.2 million years ago in order to arrive tonight since that galaxy is 2.2 million light years away. The two largest single telescopes, the Keck telescopes on the island of Hawaii, are 394 inches across and have nearly four times the light-gathering power of the 200-inch. Keeping the mirrors aligned, the telescope pointed at its target precisely, the light detectors functioning and so forth, requires a set of computers running all the time the telescope is operating. www.utexas.edu /opa/news/00newsreleases/nr_200005/nr_telescope2000509.html   (3341 words)

Hobby-Eberly Telescope (HET) Permanently angled at 55°, the telescope is free to move in azimuth. The HET, named after two benefactors, is part of the McDonald Observatory, and is jointly owned by the University of Texas, Pennsylvania State University, Stanford University, the Ludwig Maximilian University in Munich, and the Georg-August University in Göttingen. Among its uses are radial velocity measurements of nearby stars in the search for extrasolar planets. www.daviddarling.info /encyclopedia/H/HET.html   (170 words)

The Hobby-Eberly Telescope What Are Astronomers Doing? However, the HET is known as a 9.2-meter telescope because that's how much of the mirror is actually in use at any given time. Dedicated in 1997, the HET is a joint project of The University of Texas at Austin, The Pennsylvania State University, Stanford University, and two German universities: Ludwig-Maximilians-Universität München, and Georg-August-Universität Göttingen. Astronomers submit proposals to use the HET for their research projects, and they are chosen through a competitive process. mcdonaldobservatory.org /research/telescopes/telescope.php?t_id=1   (462 words)

Hobby-Eberly Telescope Mirror Image Gallery McDonald Observatory The primary mirror of the Hobby-Eberly Telescope (HET) at the University of Texas McDonald Observatory. mcdonaldobservatory.org /news/gallery/HET_mirror.html   (39 words)

The Phase II Language for the Hobby·Eberly Telescope The Hobby·Eberly Telescope (HET) (Sebring and Ramsey 1994) is a 9.2 meter optical telescope currently undergoing scientific commissioning in west Texas. While this procedure allows the HET to access over 70% of the sky over the course of the year, each object is only observable for approximately 1 hour once or twice a night. This allows the HET queue to place that observation at any time in the night that is convenient and allows other observations (possibly from other investigators) to take place during the interim. www.adass.org /adass/proceedings/adass97/gaffneyn.html   (1287 words)

ITT Industries - Welcome to Space Systems Division Unlike the 10m Keck I Telescope in Hawaii, whose 36 mirror segments were ion polished by ITT to yield a different aspheric curvature on each segment, each of the Hobby-Eberly Telescope's 91 segments is formed as a 26m radius partial sphere. Ion figuring was one factor that enabled the consortium of five universities to construct the Hobby-Eberly Telescope for a total price of $13.5 million—about one—sixth the cost of other modern telescopes of comparable size. The 11m-diameter mirror is a key component of the world's first major telescope designed specifically for spectroscopy — the study of individual wavelengths of light from celestial objects. ssd.itt.com /heritage/het.shtml   (537 words)

Spaceflight Now | Breaking News | Space technology improves view of 3rd largest telescope Interior of the 91-segment Hobby-Eberly Telescope primary mirror. As telescopes have become bigger, both on the ground and in space, the reflecting mirrors that make them work are increasingly being made in segments - that is, with smaller mirrors fitted together to make one large mirror. Since even small temperature fluctuations can cause these mirror segments to move out of alignment, and thus limit a telescope's focusing capability, one remedy is to incorporate a system that will automatically keep the segments aligned and in focus. www.spaceflightnow.com /news/n0106/16msfcscope   (894 words)

The Hobby-Eberly Telescope; Status and Science Capability [44.01] The Hobby-Eberly Telescope; Status and Science Capability The HET, formerly called the Spectroscopic Survey Telescope before its groundbreaking in March 1994, has a number of unique features that allow it to meet its science mission with unusual cost effectiveness. The pupil of the HET varies from a maximum diameter of 9 meters as an all reflecting spherical aberration corrector tracks the astronomical target on the spherical focal surface of the primary mirror. www.aas.org /publications/baas/v27n2/aas186/abs/S4401.html   (285 words)

Space Today Online - Faraway Planets Orbiting Distance Stars The Hobby-Eberly Telescope is designed for spectroscopy, a scientific technique discovered in 1814 by Joseph von Fraunhofer. Astronomers using the Hobby-Eberly Telescope in Texas have discovered the 123rd exoplanet. Other telescopes are pointed up and down and moved around to compensate for the rotation of Earth. www.spacetoday.org /DeepSpace/Stars/Planets/Exoplanet123Found.html   (635 words)

The Hobby-Eberly Telescope - Penn State The HET is a joint project of the following universities: www.astro.psu.edu /het   (10 words)

ramsey.txt Bibliographic Code: 2003SPIE.4837..919B Abstract The Hobby-Eberly Telescope (HET) is a fixed-elevation, 9.2-m telescope with a spherical primary mirror and a tracker at prime focus to follow astronomical objects. DOI: 10.1117/12.552500 Bibliographic Code: 2004SPIE.5489..288B Abstract The Hobby-Eberly Telescope (HET) is a fixed-elevation, 9.2-m telescope with a spherical primary mirror and a tracker at prime focus to follow astronomical objects. The telescope is an Arecibo-type employing a segmented primary mirror 35 meters in diameter with a 28-meter pupil. www.astro.uu.nl /~rutten/rrtex/bibfiles/ads/abs/ramsey.txt   (11038 words)

Space Optics Manufacturing Technology Center - Marshall Space Flight Center - Adaptive Optics Originally, the intention was that the structural stability of the telescope support truss, mirror segment supports and mirrors would ensure that no further alignments or figure maintenance would be required throughout the night. McDonald Observatory approached MSFC because, other than the Keck telescopes, the PAMELA is the only other segmented primary mirror telescope in the world that has successfully used edge sensors to maintain the primary mirror figure. However, thermoelastic effects likely coupled with nonlinearities in truss joints and mirror support interfaces have caused unacceptable degradation of telescope performance throughout the night. optics.nasa.gov /adap_optics/sams.html   (351 words)

HET Telescope -- Community Access Observing time on the 9.2-m effective aperture Hobby-Eberly Telescope (HET) at McDonald Observatory is available to the astronomical community through the NOAO proposal process. Please direct proposal questions specific to the HET telescope and its instruments to him at het@noao.edu. Investigators will be requested to provide an assessment of their HET observations and of the quality of their data to NOAO. www.noao.edu /gateway/het   (1066 words)

TxTell: McDonald Observatory - The Hobby-Eberly Telescope's mirror The Hobby-Eberly Telescope's mirror is a slightly concave honeycomb of 91 hexagonal mirrors--each a 260-pound slab of glass coated in silver. TxTell: McDonald Observatory - The Hobby-Eberly Telescope's mirror The entire telescope weighs 84 tons, all of which rotates on air gaskets that ride on a gigantic concrete ring. txtell.lib.utexas.edu /stories/media/m0005-10.html   (76 words)

HET Science Mission Telescopes are largely used for typically one-hour exposures not too far from zenith; HET's unique design is well matched to that fact. HET's design is consistent with a survey mission not requiring exceptional conditions. HET's modest image quality goals are well matched to the median site seeing. www.as.utexas.edu /mcdonald/het/mission.html   (261 words)

Matthew A. Bershady, Instrumentation for the Hobby-Eberly Telescope The HET's Medium Resolution Spectrograph (MRS) is an optimal telescope for the implemtation of two-dimensional fiber arrays. Given the HET's tracking instrument package at prime focus, typical integrations are 3000 seconds, and yield a 3:1 ratio of background shot-noise to detector read-noise at 0.55 microns (V band) using 1 arcsec fibers, assuming a CCD read-noise per un-binned pixel of 3e- (rms). Ramsey is the HET project scientist and PI for the MRS. www.astro.wisc.edu /~mab/research/instrumentation.html   (2084 words)

Hobby-Eberly Telescope Blue Line's edge sensing and active segmented mirror technologies have played a critical role in sustaining the Hobby-Eberly Telescope (HET) at the McDonald Observatory outside Ft. Davis, TX. The telescope, operated by the University of Texas at Austin and built by a consortium of five universities from the US and Germany, employs an impressive 9.2-meter primary mirror and a moving tracking assembly to conduct world-class spectroscopy. HET’s Segment Alignment Maintenance System (SAMS) maintains an aligned mirror stack using 480 of Blue Line’s inductive edge sensors and high-fidelity electrolytic tilt sensors, which monitor each mirror segment for changes in position. www.bluelineengineering.com /Hobby%20Eberly%20Telescope.html   (214 words)

Job Register - Detail Page Applications are invited for the position of Research Engineering/Scientist Associate III (internal title: Opto-Mechanical Technician) for the Hobby-Eberly Telescope (HET). Hobby-Eberly Telescope Research Engineering/Scientist Associate III (internal title: Opto-Mechanical Technician) Hobby-Eberly Telescope Research Engineering/Scientist Associate III (internal title: Opto-Mechanical Technician)-UNIVERSITY OF TEXAS AT AUSTIN members.aas.org /JobReg/JobdetailPage.cfm?JID=20327   (313 words)

Planning and Scheduling Software for the Hobby·Eberly Telescope These tools are to be used by the PIs to prepare proposals for telescope time and to construct observing plans to be executed by the HET's observing queue, and by the astronomers running the telescope to evaluate and schedule the proposed queued observations. This database is then shipped to the telescope where resident astronomers compile a plan for each night based on the current and forecasted conditions. These tools are being used by both PIs and the operations team to schedule observations on the telescope during all four phases of operations. www.adass.org /adass/proceedings/adass96/gaffneyn.html   (1543 words)

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