Astronomy – Ch. 5: Light & E&M Radiation (15 of 30) Wien’s Law (Temperature vs Radiation) – Video


Astronomy - Ch. 5: Light E M Radiation (15 of 30) Wien #39;s Law (Temperature vs Radiation)
Visit http://ilectureonline.com for more math and science lectures! In this video I will explain Wien #39;s Law of the relationship of temperature and radiation.

By: Michel van Biezen

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Astronomy - Ch. 5: Light & E&M Radiation (15 of 30) Wien's Law (Temperature vs Radiation) - Video

Astronomy – Ch. 5: Light & E&M Radiation (16 of 30) Radiation Curves of Stars and Humans – Video


Astronomy - Ch. 5: Light E M Radiation (16 of 30) Radiation Curves of Stars and Humans
Visit http://ilectureonline.com for more math and science lectures! In this video I will compare the radiation curves of different stars and a person.

By: Michel van Biezen

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Astronomy - Ch. 5: Light & E&M Radiation (16 of 30) Radiation Curves of Stars and Humans - Video

7th International Meeting of Astronomy and Astronautics – Part 1 – Video


7th International Meeting of Astronomy and Astronautics - Part 1
Part 1 Solemn Session of the City Council of Campos dos Goytacazes during the 7th International Meeting of Astronomy and Astronautics on April 11th, 2014 Sesso Solene na Cmara dos Vereadores...

By: Marcelo Souza

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7th International Meeting of Astronomy and Astronautics - Part 1 - Video

Inauguration of the Institute of Space Sciences and Astronomy – Video


Inauguration of the Institute of Space Sciences and Astronomy
The new golden age of astronomy is upon us, with massive instruments currently being built around the world. This is being reflected even locally, with the inauguration of the University of...

By: University of Malta

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Inauguration of the Institute of Space Sciences and Astronomy - Video

Highlights of the Night Sky – October 2014 | Astronomy Space Science Video – Video


Highlights of the Night Sky - October 2014 | Astronomy Space Science Video
More space news and info at: http://www.coconutsciencelab.com - what to look for in the night sky during October 2014. Please rate and comment, thanks! Credits: STScI.

By: CoconutScienceLab

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Highlights of the Night Sky - October 2014 | Astronomy Space Science Video - Video

Astronomy – Ch. 5: Light & E&M Radiation (17 of 30) Stefan-Botzmann Velocity Distribution – Video


Astronomy - Ch. 5: Light E M Radiation (17 of 30) Stefan-Botzmann Velocity Distribution
Visit http://ilectureonline.com for more math and science lectures! In this video I will compare the radiation curves of different stars and a person.

By: Michel van Biezen

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Astronomy - Ch. 5: Light & E&M Radiation (17 of 30) Stefan-Botzmann Velocity Distribution - Video

Astronomer Claire Max appointed interim director of UC Observatories

The University of California has appointed Claire Max, professor of astronomy and astrophysics at UC Santa Cruz, to serve as director of UC Observatories on an interim basis while an international search is conducted to appoint a permanent director. Max succeeds Sandra Faber, whose two-year appointment as interim director ended in June.

Max is internationally known for her research in plasma physics, astronomy, and astronomical instrumentation. A pioneer in the field of adaptive optics, she has served as director of the Center for Adaptive Optics at UC Santa Cruz. Max is a member of the National Academy of Sciences and a fellow of the American Academy of Arts and Sciences, the American Physical Society, and the American Association for the Advancement of Science. She received the U.S. Department of Energy's E.O. Lawrence Award in Physics in 2004.

Claire Max

UC Observatories (UCO) is a multicampus research unit headquartered on the UC Santa Cruz campus. UCO operates the Lick Observatory on Mount Hamilton and the UCO Technical Labs at UC Santa Cruz and UCLA, and is a managing partner of the W. M. Keck Observatory in Hawaii. UCOalsois the center for UC's participation in the Thirty-Meter Telescope (TMT) project.

Max takes the helm of UCO at a time of tighter budgets throughout the UC system due to declines in state funding. Many astronomers have expressed concerns about a potential loss of funding from UC to support Lick Observatory. According to Max, however, ongoing discussions with UC administrators and efforts to develop a long-range plan for UCO have improved the outlook. She emphasized that there are no plans to close Lick Observatory.

"Financially, we are far from plush, but we're not in dire straits. We now have a fruitful relationship with the UC administration, and the situation is looking better than it did a year ago," Max said. "One of the things I am looking forward to is working with the UC astronomers to develop a vision and long-term plans for the future of UCO."

According to UC Provost and Executive Vice President Aime Dorr, UC remains committed to the continued operation of Lick Observatory. "We want our faculty to have access to what they need to do their research and teach their students well. This includes Lick, as well as Keck and TMT," Dorr said. "With money tight, UC will need to be creative in finding ways to pay for what we want to do at all of these places. I am thrilled that Claire and others in the astronomy community have taken up this challenge."

Established in 1888, Lick Observatory continues to be a vital research facility where astronomers are able to conduct studies they couldn't do at other sites. Although Lick's telescopes are smaller than the 10-meter Keck Telescopes or the future Thirty-Meter Telescope, observing time is hard to get on the larger telescopes. For research that requires repeated observations over a long period of time, Lick's facilities are essential, Max said.

"For example, I have a project studying the Crab pulsar, and we can monitor it much more frequently at Lick than we could at Keck," she said. "Also, graduate students have much more access to the telescopes at Lick, so it is a very important facility for training future generations of astronomers."

Lick Observatory is also an important site for the development and testing of advanced technology that will ultimately be deployed on larger telescopes. For example, laser guide-star adaptive optics (AO) was largely developed by Max and colleagues from the Lawrence Livermore National Laboratory at Lick's 3-meter Shane Telescope, and then became the basis for the Keck Observatory's laser guide-star AO system. Lick's newest telescope is the 2.4-meter Automated Planet Finder, the first robotic telescope for finding potentially habitable planets around nearby stars.

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Astronomer Claire Max appointed interim director of UC Observatories

Astronomy: To catch a cosmic ray

The Pierre Auger Observatory in Argentina has spent almost ten years looking for the source of ultra-high-energy cosmic rays but to no avail. Now the observatory faces an uncertain future.

01 October 2014

Argentina, famed for its beef and wine, is also home to the Pierre Auger Observatory, which uses water-filled plastic tanks spaced across the plains of Pampa Amarilla at the foot of the Andes to search for the origin of ultra-high-energy cosmic rays.

Katia Moskvitch

Each canister is filled with 12,000 litres of purified water, which produces a faint but detectable streak of blue-ish light when a charged particle passes through. Most lie on land owned by local farmers. This tank has been on Anselmo Francisco Jake's land for about two decades.

Katia Moskvitch

In addition to the tanks, the observatory has 27 fluorescence telescopes grouped at four sites around the edges of the array. These telescopes scan the skies for the faint ultraviolet light produced when the high-energy particles rip through the atmosphere.

Katia Moskvitch

The cosmic rays never reach the ground. Instead, they hit an air molecule high in the atmosphere, blasting loose billions of secondary particles in an 'air shower' that continues to cascade downwards along the cosmic ray's original path. These air-shower particles are the ones generally detected by Augers 1,600 tanks, shown as yellow dots superimposed over their actual location near the town of Malarge.

Cosmus: Randy Landsberg, Dinoj Surendran and Mark SubbaRao (Univ. Chicago/Adler Planetarium)/AIRES: Sergio Sciutto/PAO (CC BY-SA)

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Astronomy: To catch a cosmic ray

Gift has teen seeing stars

Act caps of successful space camp EMMA BAILEY

EMMA BAILEY/ Fairfax NZ

HUGE PRIZE: Emilie Agnew with the telescope she was gifted after attending space camp and Robert McTague, from the South Canterbury Astronomers Group.

A potential new star has been born in the astronomy world thanks to the generosity of a Timaru woman.

Last month, a Space Camp was held at Raincliff Camp and, to fundraise, a raffle was held with the winner receiving a $849 telescope donated by New Zealand Telescopes.

Freedom Ramage was at the supermarket and bought a ticket.

When South Canterbury Astronomers Group (SCAG) founder Robert McTague called her to say she had won the telescope, she asked if he knew of a young person passionate about astronomy.

"I thought I could have a lot of fun with it but not as much as someone that is passionate about astronomy and especially someone that went to the camp," Ramage said.

"As soon as I said did he know someone, he said a name straight away, a 15-year-old girl that would love it. I am a Christian so I don't believe in keeping everything for yourself."

Emilie Agnew attended the camp and was delighted to get the telescope.

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Gift has teen seeing stars

Astronomy: Wild ducks take flight in open cluster

The Wide Field Imager on the MPG/ESO 2.2-metre telescope at ESO's La Silla Observatory in Chile has taken this beautiful image, dappled with blue stars, of one of the most star-rich open clusters currently known -- Messier 11, also known as NGC 6705 or the Wild Duck Cluster.

Messier 11 is an open cluster, sometimes referred to as a galactic cluster, located around 6000 light-years away in the constellation of Scutum (The Shield). It was first discovered by German astronomer Gottfried Kirch in 1681 at the Berlin Observatory, appearing as nothing more than a fuzzy blob through the telescope. It wasn't until 1733 that the blob was first resolved into separate stars by the Reverend William Derham in England, and Charles Messier added it to his famous catalogue in 1764.

Messier was a comet hunter and the catalogue came into being as he was frustrated by constantly observing fixed, diffuse objects that looked like comets (for example, objects that we now know to be clusters, galaxies and nebulae). He wanted a record in order to avoid accidentally observing them again and confusing them with possible new comets. This particular stellar cluster was noted down as the eleventh such object -- hence the name of Messier 11.

Open clusters are typically found lying in the arms of spiral galaxies or in the denser regions of irregular galaxies, where star formation is still common. Messier 11 is one of the most star-rich and compact of the open clusters, being almost 20 light-years across and home to close to 3000 stars. Open clusters are different to globular clusters, which tend to be very dense, tightly bound by gravity, and contain hundreds of thousands of very old stars -- some of which are nearly as old as the Universe itself.

Studying open clusters is great way to test theories of stellar evolution, as the stars form from the same initial cloud of gas and dust and are therefore very similar to one another -- they all have roughly the same age, chemical composition, and are all the same distance away from Earth. However, each star in the cluster has a different mass, with the more massive stars evolving much faster than their lower mass counterparts as they use up all of their hydrogen much sooner.

In this way, direct comparisons between the different evolutionary stages can be made within the same cluster: for example, does a 10 million year old star with the same mass as the Sun evolve in a different way to another star that is the same age, but half as massive? In this sense, open clusters are the closest thing astronomers have to "laboratory conditions."

Because the stars within open clusters are very loosely bound to one another, individuals are very susceptible to being ejected from the main group due to the effect of gravity from neighbouring celestial objects. NGC 6705 is already at least 250 million years old, so in a few more million years it is likely that this Wild Duck formation will disperse, and the cluster will break up and merge into its surroundings.*

This image was taken by the Wide Field Imager on the MPG/ESO 2.2-metre telescope at ESO's La Silla Observatory in northern Chile.

Notes

*The alternative and evocative name for NGC 6705, the Wild Duck Cluster, came about in the 19th century. When the cluster was seen through a small telescope it was noticed that the brightest stars formed an open triangle pattern on the sky that resembled ducks flying in formation.

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Astronomy: Wild ducks take flight in open cluster

Astronomy – Ch. 5: Light & E&M Radiation (13 of 30) Different Energies of E&M Radiations – Video


Astronomy - Ch. 5: Light E M Radiation (13 of 30) Different Energies of E M Radiations
Visit http://ilectureonline.com for more math and science lectures! In this video I will discuss the different energies of photons.

By: Michel van Biezen

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Astronomy - Ch. 5: Light & E&M Radiation (13 of 30) Different Energies of E&M Radiations - Video

Astronomy – Ch. 5: Light & E&M Radiation (29 of 30) Doppler Shift and Rotation of Celestial Objects – Video


Astronomy - Ch. 5: Light E M Radiation (29 of 30) Doppler Shift and Rotation of Celestial Objects
Visit http://ilectureonline.com for more math and science lectures! In this video I will explain how to use the Doppler shift to understand the rotation of c...

By: Michel van Biezen

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Astronomy - Ch. 5: Light & E&M Radiation (29 of 30) Doppler Shift and Rotation of Celestial Objects - Video