The extremely stable components of the 1,200 ton Giant Magellan Telescope are designed to virtually eliminate vibration during operation. The full structure will float on a thin bearing of oil, never touching the ground. Each 17 ton mirror will float on a cushion of air, never touching the telescope. The secondary mirror, 15 stories above, will float by magnetism, oscillating and reshaping in real time as adaptive optics cancels atmospheric distortion.
Watch an informal overview of the Giant Magellan Telescope by Director Pat McCarthy from Sep 2013 at SlidesLive.
A timelapse of the Sun in 4K
The surface of the sun from October 14th to 30th, 2014, showing sunspot AR 2192, the largest sunspot of the last two solar cycles (22 years). The animation shows the sun in the ultraviolet, at a rate of 52.5 minutes per second, using more than 17,000 images produced by the Solar Dynamics Observatory [Helioviewer]. The view is rotated 180 degrees so that south is "up". The audio is processed from SOHO HMI data by Alexander G. Kosovichev. Image data courtesy of NASA/SDO and the AIA, EVE, and HMI science teams. Mouseover for full screen option..
Black Holes, Galaxies and the Evolution of the Universe: An Observer's View
Dramatic Landing for Philae Marks First Touchdown on a Comet
WIRED consults with planetary scientists, including McDonald Observatory Asst. Director Anita Cochran, on the milestone encounter with comet 67P/Churyumov-Gerasimenko. In coming months, from the surface, the lander will collect and submit data as the comet approaches the sun, emits jets of gas and changes shape, perhaps even breaking apart.
This October photo from the University of Arizona Mirror Lab shows the construction of the furnace mold for the Giant Magellan Telescope's 4th mirror segment. This segment will have an opening in the center, for light to pass from secondary mirrors to instruments below. The GMT's 8-meter, asymmetrically curved mirror segments are the most challenging yet constructed.
Close neighbor Alpha Centauri, 4.3 light-years distant [Lorenzi]
Possible Shortcut to Finding Extrasolar Planets
Forbes magazine recently featured research by Ivan Ramirez, who is known for work with stars closely resembling our sun. Dr. Ramirez and colleagues hypothesize that a slight depletion of the key metals that comprise rocky planets--barium, aluminum, iron, magnesium, titanium, chromium, silicon, yttrium--in the spectra of stars similar to the sun, may indicate the presence of planets, just as in our solar system.
Prof. Paul Shapiro's Cosmology Research Group has performed one of the world's largest and most sophisticated
computer simulations of the transformation of the early universe--from a featureless expanding gas, to a place where galaxies formed, stars formed within those galaxies,
and radiation from the stars ionized the neutral hydrogen in the vast intergalactic regions.
The visualization is among a collection of images solicited by the College of Natural Sciences to illustrate the beauty of science.
StarDate Radio host Sandy Wood narrates a 15-minute overview of McDonald Observatory, from a 1926 financial gift from Paris, Texas banker William J. McDonald, to the current leading-edge search for Dark Energy at the Hobby-Eberly Telescope. Historic footage and interviews with observatory directors and research scientists chronicle dramatic changes in research methods, advancing engineering capabilities, the construction of new telescopes, evolving science, and the development of one of the world's largest public outreach centers.
Texas Astronomy Undergraduate Research Symposium 2014
The University of Texas at Austin Department of Astronomy will be hosting the fourth annual Texas Astronomy Undergraduate Research Symposium on Friday, September 19, 2014. Undergraduates from central Texas are invited to give 10 minute talks on their astronomy research, based on either their summer or academic year research projects. Other students, postdocs, and faculty are invited to attend and hear about the first-rate research being done by these undergraduates.
The Inner Regions of Quasars
The symposium The Inner Regions of Quasars will be held Friday, September 12th through Sunday, September 14th, 2014 on the 15th floor of Robert Lee Moore Hall (RLM) [map] on the campus of The University of Texas at Austin, to celebrate the work and career of Dr. Beverley Wills. Bev has been one of the pioneers in observing and interpreting the broad emission lines in all types of AGNs. Her enthusiasm and dedication inspired a generation of researchers in the field. This meeting celebrates Bev's contributions (many with Derek Wills) by presenting new results and by reviewing what has been achieved recently in this area of research.
97-point grid of the spherical plane of focus. [John Good]
HETDEX Update: Tracking Sphere
Mechanical Engineer John Good was in West Texas in late July to run point tests with HET's new tracker. The tracker sits 13 meters above the stationary primary mirror array, and moves within six axes (hexapod), to track stars. The image above defines the contact lens shaped plane along which the tracker must move to both track a star and maintain focus. These plotted, six axis measurements are accurate enough to quantify the deflection of the HET frame as the tracker assembly moves. The 20-ton, automated tracker will routinely traverse the focal sphere with a precision of a few microns, about 1/10th the diameter of a human hair.
Keep up with the HET Wide Field Upgrade at
Summer Teacher Workshop at McDonald Observatory [Cianciolo]
With programs like the Freshman Research Initiative, UT Astronomy continues to develop as a leading program for high achieving undergraduates, who participate directly in research and publication with scientists and faculty. From left top: Arina Rostopchina, Outstanding Senior; James Diekmann, Ralph Cutler Greene Scholar; Rebecca Larson, Karl G. Henize Scholar; Mark Moore, Phi Beta Kappa; Amanda Turbyfill, Phi Beta Kappa; Sae Saito (not pictured), Eva Stevenson Woods Endowed Presidential Scholarship.
75th Anniversary Lectures
The W. J. McDonald Observatory: Yesterday, Today and Tomorrow
McDonald Observatory's newest instrument, the Immersion Grating Infrared Spectrograph (IGRINS), began engineering runs in March. It will increase the spectral range, the range of instantaneous collectable wavelengths, 30x over the premier CRyogenic high-resolution InfraRed Echelle Spectrograph (CRIRES) at the European Southern Observatory's Very Large Telescope (VLT). IGRINS will have the ability to better penetrate dust obscured regions where stars and planets form, and will be used to find and characterize extrasolar planets. IGRINS will be available to observers as a PI instrument in Fall 2014.
Giant Magellan Telescope 24.5-meter concept arose from image quality of the 6.5-meter Magellan Telescopes
Visible from the construction site of the Giant Magellan Telescope (GMT), at Chile's Las Campanas Observatory, sit the twin 6.5-meter Magellan telescopes, perhaps the best natural imaging telescopes in the world. GMT partner, the Carnegie Instution of Washington, on behalf of the Magellan Project, pioneered the structured monolith design behind the concept of the GMT. Read more about the Magellan Telescopes.
75th Anniversary Public Lecture
Cosmic Catastrophes: Supernovae Through Space and Time
Prof. Don Winget, Harlan J. Smith Centennial Professor in Astronomy, will deliver the public lecture, "Small Stars in a Large Context," Saturday, February 22, 2014 at 1:00 PM, in POB 2.302 on The University of Texas at Austin campus. Dr. Winget will discuss white dwarf stars. White dwarfs are the simplest stars, with the simplest known chemical surface compositions, yet they exhibit properties to probe the widest parameters of the universe. Now, they have become the first stars ever produced in a lab! Discover McDonald Observatory's world leading, mind-expanding exploration of this amazing class of stars..
Assembly and alignment of VIRUS spectrographs
The Hobby-Eberly Telescope in West Texas, is clearing room for the pending arrival of the first of 150 VIRUS spectrographs, undergoing assembly and alignment in Austin. Top left: units house optics and electronics in a vacuum. Top right: completed and aligned VIRUS pairs begin to fill a rack. Bottom right: optical fiber feeds the pairs during alignment, as mirrors and electronics are calibrated. Alignment alone requires about two days per pair. Bottom left: Trent Peterson and undergraduate Ingrid Johnson describe the demanding assembly. Learn more at HET Blog and HETDEX: Illuminating the Darkness.
Dr. Robert C. Kennicutt, Jr., Plumian Professor of Astronomy and Experimental Philosophy at the Institute of Astronomy, University of Cambridge, will deliver the public lecture, "The Hidden Universe Revealed," Wednesday, February 19, 2014 at 4:00 PM, in CPE 2.208 on The University of Texas at Austin campus. Dr. Kennicutt will discuss completely new classes of objects and phenomenon revealed by international space telescopes observing in the infrared and terahertz, regions of the electromagnetic spectrum previously hidden from telescopes. Dr. Kennicutt is the 17th recipient of the Antoinette de Vaucouleurs Memorial Lectureship, recognizing a lifetime of outstanding contribution to Astronomy.
The McDonald Observatory, celebrating its seventy-fifth anniversary this year, forges ahead with groundbreaking research and crusades to keep the night skies of West Texas pristine and unadulterated.
Presentation of the 2014-15 Antoinette de Vaucouleurs Lectureship and Medal
Dr. Meg Urry, Israel Munson Professor of Physics and Astronomy, Chair of the Physics Department, and Director of the Yale Center for Astronomy and Physics Yale University, receives the Antoinette de Vaucouleurs Lectureship and Medal from Department of Astronomy Chair Dan Jaffe, recognizing outstanding contribution to Astronomy.
Astrophysicist Dr. Frank Summers, from the Space Telescope Science Institute, will present the public lecture "Truth and Beauty in Astronomy Visualization", Thursday, March 6, 2014 from 7-8:00 PM, in ECJ 1.202. The talk will showcase compelling visuals and describe techniques used in creating sequences for schools, the press, planetariums, and IMAX films.
Presentation of the 2013-14 Antoinette de Vaucouleurs Lectureship and Medal
Dr. Robert Kennicutt, Jr., Plumian Professor of Astronomy and Experimental Philosophy at the Institute of Astronomy, University of Cambridge, receives the Antoinette de Vaucouleurs Lectureship and Medal from Department of Astronomy Chair Dan Jaffe, recognizing a lifetime of outstanding contribution to Astronomy.