Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Swedish solar telescope bursts dream barrier

18.11.2002


Part of the sunspot group near disk center


The first pictures from the new Swedish solar telescope on La Palma, Canary Islands, are presented in an article in the prestigious science journal Nature from November 14. The images of the sun are the most detailed ever seen. One of the most sensational discoveries is a previously unknown detailed sunspot structure.

The impact of this discovery is now capturing the attention of solar researchers, and it won`t be long before new and revised theories are formulated.

The solar telescope was designed and built in Sweden and is run by the Institute for Solar Research at the Royal Academy of Science. It boasts a lens one meter in diameter and is specially constructed to cope with problems of movement in the air and atmosphere, which normally disturb in the image. All air has been pumped out of the telescope tube, and a mirror in the path of light changes shape roughly a thousand times per second to counteract disturbances from the atmosphere. This means that the pictures are the sharpest ever taken of the sun. The resolution would allow the bottom line of eye-test charts to be read from a distance of 3 km.



The new images show narrow dark cores in the threadlike structures surrounding the dark part of a sunspot. The nature of these cores is still unknown. Sunspots are areas with highly concentrated magnetic fields. The sun¢s magnetic fields can have a major impact on the function of telecommunications and satellites.

Images and films from the new solar telescope can be downloaded from:
http://www.solarphysics.kva.se/NatureNov2002 or http://www.solarphysics.kva.se


Note: Observatories in space that study the sun are equipped with telescopes that are too small to compete with the land-based Swedish telescope in terms of resolution. They, on the other hand, can detect radiation that does not penetrate to the surface of the earth, thus complementing our picture of the sun. Observations from earth, however, are easily marred by movements in the atmosphere and require extremely stable air. The observation site atop the extinct volcano on La Palma can be regarded as the best in the world for a solar telescope. The island of La Palma should not be confused with the city of Las Palmas on Gran Canaria.

Agneta Paulsson | alfa
Further information:
http://www.su.se
http://www.solarphysics.kva.se/NatureNov2002
http://www.solarphysics.kva.se

More articles from Physics and Astronomy:

nachricht Australian technology installed on world’s largest single-dish radio telescope
26.09.2016 | International Centre for Radio Astronomy Research (ICRAR)

nachricht How to merge two black holes in a simple way
26.09.2016 | Plataforma SINC

All articles from Physics and Astronomy >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: OLED microdisplays in data glasses for improved human-machine interaction

The Fraunhofer Institute for Organic Electronics, Electron Beam and Plasma Technology FEP has been developing various applications for OLED microdisplays based on organic semiconductors. By integrating the capabilities of an image sensor directly into the microdisplay, eye movements can be recorded by the smart glasses and utilized for guidance and control functions, as one example. The new design will be debuted at Augmented World Expo Europe (AWE) in Berlin at Booth B25, October 18th – 19th.

“Augmented-reality” and “wearables” have become terms we encounter almost daily. Both can make daily life a little simpler and provide valuable assistance for...

Im Focus: Artificial Intelligence Helps in the Discovery of New Materials

With the help of artificial intelligence, chemists from the University of Basel in Switzerland have computed the characteristics of about two million crystals made up of four chemical elements. The researchers were able to identify 90 previously unknown thermodynamically stable crystals that can be regarded as new materials. They report on their findings in the scientific journal Physical Review Letters.

Elpasolite is a glassy, transparent, shiny and soft mineral with a cubic crystal structure. First discovered in El Paso County (Colorado, USA), it can also be...

Im Focus: Complex hardmetal tools out of the 3D printer

For the first time, Fraunhofer IKTS shows additively manufactured hardmetal tools at WorldPM 2016 in Hamburg. Mechanical, chemical as well as a high heat resistance and extreme hardness are required from tools that are used in mechanical and automotive engineering or in plastics and building materials industry. Researchers at the Fraunhofer Institute for Ceramic Technologies and Systems IKTS in Dresden managed the production of complex hardmetal tools via 3D printing in a quality that are in no way inferior to conventionally produced high-performance tools.

Fraunhofer IKTS counts decades of proven expertise in the development of hardmetals. To date, reliable cutting, drilling, pressing and stamping tools made of...

Im Focus: Launch of New Industry Working Group for Process Control in Laser Material Processing

At AKL’16, the International Laser Technology Congress held in May this year, interest in the topic of process control was greater than expected. Appropriately, the event was also used to launch the Industry Working Group for Process Control in Laser Material Processing. The group provides a forum for representatives from industry and research to initiate pre-competitive projects and discuss issues such as standards, potential cost savings and feasibility.

In the age of industry 4.0, laser technology is firmly established within manufacturing. A wide variety of laser techniques – from USP ablation and additive...

Im Focus: New laser joining technologies at ‘K 2016’ trade fair

Every three years, the plastics industry gathers at K, the international trade fair for plastics and rubber in Düsseldorf. The Fraunhofer Institute for Laser Technology ILT will also be attending again and presenting many innovative technologies, such as for joining plastics and metals using ultrashort pulse lasers. From October 19 to 26, you can find the Fraunhofer ILT at the joint Fraunhofer booth SC01 in Hall 7.

K is the world’s largest trade fair for the plastics and rubber industry. As in previous years, the organizers are expecting 3,000 exhibitors and more than...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Experts from industry and academia discuss the future mobile telecommunications standard 5G

23.09.2016 | Event News

ICPE in Graz for the seventh time

20.09.2016 | Event News

Using mathematical models to understand our brain

16.09.2016 | Event News

 
Latest News

Stronger turbine blades with molybdenum silicides

26.09.2016 | Materials Sciences

Scientists Find Twisting 3-D Raceway for Electrons in Nanoscale Crystal Slices

26.09.2016 | Materials Sciences

Lowering the Heat Makes New Materials Possible While Saving Energy

26.09.2016 | Materials Sciences

VideoLinks
B2B-VideoLinks
More VideoLinks >>>