News: Centre Onsala related to Chalmers University of TechnologySun, 16 May 2021 01:48:16 +0200​Star hunt at Swedish schools<p><b>​An intensive star hunt is currently ongoing at more than 20 Swedish schools –but it’s not any kind of talent show. It is this year's edition of the school project Help a Scientist, arranged for the tenth time by the Nobel Prize Museum. This year's theme is stars and space. The Star Hunt is a scientific search for new stars and a hunt for new knowledge about the conditions under which stars are formed.​</b></p><div><span style="background-color:initial"><br /></span></div> <img src="/SiteCollectionImages/Institutioner/SEE/Nyheter/Star-hunt-Giuliana_Ruben_Jonathan.jpg" class="chalmersPosition-FloatRight" alt="Portrait pictures Dr. Giuliana Cosentino, Dr. Rubén Fedriani and Professor Jonathan Tan" style="margin:5px" /><div><span style="background-color:initial">D</span><span style="background-color:initial">uring September, The Star Hunt has started at the participating schools, which are spread all over the country. 32 teachers and up to 1500 school children from 67 classes learn about astronomy and get to participate in a real research project. The students involved are in the eighth and ninth grades and they will get help from several Chalmers astronomers.</span><br /></div> <div><br /></div> <div>The researchers Dr. Giuliana Cosentino, Dr. Rubén Fedriani and Professor Jonathan Tan from Chalmers' Department of Space, Earth and Environment participate in this year's version of Help a Scientist. It is not only an exciting school project, but the students' results will be helpful to the researchers in their work.</div> <div><br /></div> <div>“Students will analyse images taken in a variety of wavelengths of light, from radio to x-ray, by telescopes in space, in the air and on the ground. The goal is to contribute new knowledge about the birth of stars and in the long run increase the understanding of our galaxy and our own origin”, says Jonathan Tan.<span style="background-color:initial"> </span></div> <h2 class="chalmersElement-H2">Image analysis in collaboration with NASA</h2> <div>What the students will help the researchers with is to identify new stars that are born from interstellar clouds and answer the questions if these stars form alone, as twins or clustered together in great broods?  </div> <div><br /></div> <div>The images the pupils will analyse will be provided by the web-based WorldWide Telescope platform, which interfaces with NASA databases.</div> <div><br /></div> <div>“We have worked with developers of this software specially for the Star Hunt project to upload some of our research datasets for the students to analyze. The students will be able to see for themselves how stars are forming in our galaxy by examining these images and cross matching them against a wide variety of other data available at the platform”, says Jonathan Tan.</div> <h2 class="chalmersElement-H2">Pilot exercises in the Gothenburg area</h2> <div>Earlier this year, pilot exercises were arranged at two different schools in the Gothenburg region, at Torslandaskolan and Torpskolan in Lerum.</div> <div><br /></div> <div>“We met the classes and gave a lecture on the formation of stars and how astronomers make observations with telescopes. Then we worked together on a research exercise. The test rounds were great for us; we have been able to develop the tasks and the tools based on the feedback we received from the students”, says Jonathan Tan.</div> <div><br /></div> <div>In addition to giving lectures for students, the researchers have worked hard to produce an 80-page booklet which explains the exercises. The document also contains an introduction to the subject of astronomy and to the research group's main focus, star formation.</div> <div><br /></div> <div>The researchers have also had a digital start-up conference with about thirty teachers and later this autumn, digital class visits will be done online.</div> <h2 class="chalmersElement-H2">Scientific level, creativity and design are awarded</h2> <div>Since the goal of Help a Scientist is to let the students experience a researcher's reality, they will also have to work on presenting their studies by making scientific posters that demonstrate the research process and the results from The Star Hunt. The posters are a part of a competition where different prizes are given based on science, creativity and design.</div> <div>​​<br /></div> <div>Each category has different jury groups consisting of researchers, science journalists and the pupils themselves. Students can win grants for their class funds and study visits to Chalmers where they get to meet prominent researchers.</div> <div><br /></div> <div>The winners will be presented in February 2021, hopefully at a ceremony at the Nobel Prize Museum in Stockholm.</div> <div><span style="background-color:initial"><br /></span></div> <div><span style="background-color:initial"><strong>Text:</strong> Julia Jansson​</span></div> Thu, 01 Oct 2020 14:00:00 +0200 core to outer space<p><b>Rising sea levels, growing deserts and variations in the atmosphere. Earth observations and measurement are crucial tools for understanding climate change. In Chalmers’ upcoming MOOCs Sensing Planet Earth we will learn about the tools and methods for measuring the world we live in. Thomas Hobiger is the coordinator of the MOOCs starting in early spring 2016.</b></p><div>The next of MOOCs (Massive Open Online Courses) from Chalmers will be given in February and March of 2016. The subject of “Sensing Planet Earth” is how we measure the world around us: sea levels, earthquakes, changes in the atmosphere, etcetera. Several experts from Chalmers’ Department of Earth and Space Sciences will partake as instructors in the courses. </div> <div> </div> <div>Thomas Hobiger is the coordinator for “Sensing Planet Earth”. As an Associate Professor in Geodesy and Geodynamics he divides his time between Campus Chalmers Johanneberg in Gothenburg and the Onsala Space Observatory. Originally from Austria, he spent eight years as a researcher in Japan before arriving at Chalmers in 2014. One thing that intrigues him about the MOOC format, he says, is its global perspective.</div> <div>“In Earth science you simply have to be international. The Earth ignores borders. To be able to measure the different aspects of the planet we need people from around the world, with a wide variety of skills,” says Thomas Hobiger.</div> <h2 class="chalmersElement-H2">Different areas of Earth sciences</h2> <div>“Sensing Planet Earth” will run for a total of eight weeks, divided into two standalone four-week courses with a three-week break dividing them. Every week of the courses will be dedicated to the study of a specific area of Earth sciences, and include an introduction by an expert from that particular field. The courses will cover, to name a few areas, the geosphere, the biosphere and the atmosphere, to finally come to an end by drawing some conclusions about global change, climate and disaster monitoring. Participants should devote an estimated six hours per week to their studies to be able to complete the courses.</div> <div>“We will include a couple of home assignments where participants are encouraged to collect their own data. They could be asked, for example, to make weather observations or record changes in temperature, and then compare their findings with each other,” says Thomas Hobiger.</div> <div> </div> <div>By offering a course that covers the basics of the tools and methods commonly used in Earth Sciences to measure the planet, and how the data collected is interpreted, Thomas Hobiger hopes to garner interest in fields that are vital to the research of climate change and its effects. Apart from people in general with an interest in Earth Science, he says the MOOCs will be aimed at high school students and teachers.</div> <div>“Students aged between 16 and 18 should have sufficient basic knowledge of mathematics and physics to be able to keep up with the MOOCs. We want more young people to discover Earth Sciences, to make them aware of the techniques we use and how they themselves sense and measure the world around them.”</div> <div><h2 class="chalmersElement-H2">Inspire teachers and influence decision makers</h2> <div>As for the teachers, Thomas Hobiger says that the MOOCs can offer them new ideas and input to bring into the classroom. The teachers can either let their students take the course as a part of a science-oriented curriculum, or pick parts to use in their own lectures.</div></div> <div> </div> <div>A third important target group that Thomas Hobiger brings up is decision makers, who in their positions are dependent on the use of earth observation data.</div> <div>“Within areas such as disaster monitoring and urban planning a plethora of data gathered from measuring and observing the earth is used all the time. People working in that sector, making important decisions that affect the environment, need some basic understanding of how this type of data is gathered and how to interpret it.” </div> <div><br /><a href=""><img src="/_layouts/images/icgen.gif" class="ms-asset-icon ms-rtePosition-4" alt="" />Enroll in part one: &quot;Sensing Planet Earth – Core to Outer Space&quot;</a><br /><br /><a href=""><img src="/_layouts/images/icgen.gif" class="ms-asset-icon ms-rtePosition-4" alt="" />Enroll in part two: &quot;Sensing Planet Earth – Water and Ice&quot;</a><br /><br /><a href="/en/education/Pages/MOOC---Massive-Open-Online-Courses.aspx"><img src="/_layouts/images/ichtm.gif" class="ms-asset-icon ms-rtePosition-4" alt="" />Learn more about ChalmersX and previous MOOCs</a><br /></div> <div> </div> <div><strong>Text:</strong> Carolina Svensson<br /><strong>Photo: </strong>Anna-Lena Lundqvist<br /></div>Mon, 23 Nov 2015 09:00:00 +0100 20-metre telescope gets a new radome<p><b><span>On 12th August work began on replacing the radome which surrounds and protects the 20-metre telescope at the Onsala Space Observatory, Chalmers. Two weeks on it was time for the exciting moment when the new cap, made up of 50 of the radome’s total 620 triangular panels, was installed.<span style="display:inline-block"></span></span></b></p>The 20-metre telescope has been used for observations in radio astronomy and geoscience from as far back as 1976. It is still often used by scientists, but its 38 year old protective shell had begun to show signs of age.<br /><img src="/SiteCollectionImages/20140701-20141231/open_radome_w_new_n_old_caps_665x330.jpg" alt="" style="margin:5px" /><br /><strong>A complicated operation</strong><br />So it was time to renew the telescope’s protective covering, comprising 620 triangular panels of glass-fibre reinforced plastic. A complicated operation, and one dependent on favourable weather conditions.<br />The 50 panels positioned on the top of the big white football have now been successfully replaced. The total weight of these panels is two tons.<br />‘Over the next eight weeks the remaining 570 panels will be replaced one at a time,’ explained Hans Olofsson, professor of radio astronomy at Chalmers, supervising the radome replacement project.   <br /><br /><strong>Attracts thousands of visitors</strong><br />Onsala Space Observatory lies in north Halland, 45 km south of Göteborg. The mysterious white ball is a familiar landmark in the area and attracts thousands of visitors each year.<br />The radome upgrade is the most visible change that has happened at the observatory since its part of the giant telescope Lofar was built here in 2011.<br />In two of these pictures, the Lofar station is visible beyond the open radome.<br /><img src="/SiteCollectionImages/20140701-20141231/open_radome_view_towards_lofar_665x330.jpg" alt="" style="margin:5px" /><br /><strong>54 meter high crane</strong><br />The panels were lifted into place with a green, 54 meter high crane. During this operation the dish of the 20 meter telescope was redirected in order to protect it when work was being carried out on the various parts of the radome.<br />Much of the work was done by a team from Essco, the same US company that installed the original radome when the telescope was first built. The work is expected to extend into October. Since 12th August, the team have been installing the new panels one at a time. Now the new cap is in position, they will continue this process until all 620 panels have been replaced.<br /><br /><strong>Text:</strong> Robert Cumming and Michael Nystås<br /><strong>Photo:</strong> Peter Widing, Robert Cumming, Lars Wennerbäck and Roger Hammargren<br /><br /><a href="">To see more pictures of the </a>radome replacement visit Flickr<br /><br /><strong>Facts about Onsala Space Observatory</strong><br />Onsala Space Observatory, the Swedish National Facility for Radio Astronomy, provides scientists with equipment to study the Earth and the rest of the Universe. We operate several radio telescopes in Onsala, 45 km south of Göteborg, and take part in international projects. The observatory is a geodetic fundamental station.<br /><br />Two radio telescopes are operated along with a station in the Lofar telescope network, along with equipment for GNSS, ocean level measuring, gravimetry, seismology and atmosphere research. The Observatory participates in several international projects. It is hosted by the department of Earth and Space Sciences at Chalmers and operated on behalf of the Swedish Research Council.<br /><br />The observatory is now building a new tide gauge station to complement the observatory’s GNSS tide gauge, which measures ocean levels using signals from GPS satellites.<br /><br />The Onsala Twin Telescope, two 12 meter antennas that will be used to measure the Earth’s movements, is to be built in 2015.<br /><a href="/rss/oso-sv"></a>Tue, 02 Sep 2014 07:00:00 +0200