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6 years ago

Posted on Jan 24, 2019:

The new version of Hubble’s deep image is shown above. In dark grey you can see the new light that has been found around the galaxies in this field. That light corresponds to the brightness of more than one hundred billion suns.

It has taken researchers at the Instituto de Astrofísica de Canarias almost three years to produce this deepest image of the Universe ever taken from space, by recovering a large quantity of ‘lost’ light around the largest galaxies in the iconic Hubble Ultra-Deep Field.

To produce the image a group of researchers from the Instituto de Astrofísica de Canarias (IAC) led by Alejandro S. Borlaff used original HUDF images from the Hubble Space Telescope. After improving the process of combining several images the group was able to recover a large quantity of light from the outer zones of the largest galaxies in the HUDF. Recovering this light, emitted by the stars in these outer zones, was equivalent to recovering the light from a complete galaxy (“smeared out” over the whole field) and for some galaxies this missing light shows that they have diameters almost twice as big as previously measured.
The HUDF is the result of combining hundreds of images taken with the Wide Field Camera 3 (WFC3) of the HST during over 230 hours of observation which, in 2012, yielded the deepest image of the Universe taken until then. But the method of combining the individual images was not ideally suited to detect faint extended objects. To do this, Borlaff explains “What we have done is to go back to the archive of the original images, directly as observed by the HST, and improve the process of combination, aiming at the best image quality not only for the more distant smaller galaxies but also for the extended regions of the largest galaxies.
The WFC3 with which the data were taken was installed by astronauts in May 2009, when the Hubble had already been in space for 19 years. This was a major challenge for the researchers because the complete instrument (telescope+ camera) could not be tested on the ground, which made calibration more difficult. To overcome the problems they analyzed several thousand images of different regions on the sky, with the aim of improving the calibration of the telescope on orbit.

The image of the universe which is now the deepest “has been possible thanks to a striking improvement in the techniques of image processing which has been achieved in recent years, a field in which the group working in the IAC is at the forefront”, says Borlaff.

The Daily Galaxy via Instituto de Astrofísica de Canarias

Image Credit: A. S. Borlaff et al.

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Posted on Jan 24, 2019: The new version of Hubble’s deep image is shown above. In dark grey you can see the new light that has been found around the galaxies in this field. That light corresponds to the brightness of more than one hundred billion suns. It has taken researchers at the Institu... Read more

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1/15/2019 10:16 AM PST | Rihanna is going after her own father in court for using her Fenty brand and his relationship to her to launch a business for himself ... according to new court docs. In a new lawsuit -- obtained by TMZ -- Rihanna claims her father, Ronald Fenty, recently started a tal... Read more

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AndrewHicks › New article
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Roman Emperor Julian is called the Apostate, because 37 years after Christianity was founded in 325 AD, he tried to shelter the Essenes who still survived and were practicing underground. Julian called the Christians GALILEANS , a derogatory term. Roman Emperor Julian was the last non-Chri... Read more

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Dubai just built the world’s largest picture frame. Dubai Frame (Arabic: الإطار دبي‎) is a project conceived and titled by Fernando Donis and his office DONIS. better source needed The design was selected as the winner of the 2009 ThyssenKrupp Elevator International Award from 926 prop... Read more

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Emirates Tweeted This Picture Of Dubai 'Then And Now' And The Transformation Is Mind-Boggling. It's hard to believe the incredible transformation Dubai has undergone in the past thirty years. From flat desert land, to one world's most architecturally stunning cities in the world, the change has b... Read more

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AndrewHicks › New article
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France named Europe's top country for food sustainability thanks to war on waste

French supermarkets banned from throwing out unsold fruits and vegetables while all restaurants required to provide doggy bags for leftovers under national commitment to recycling.
A war on waste food in France, where supermarkets are banned from throwing away unsold food and restaurants must provide doggy bags when asked, has helped it secure the top spot in a ranking of countries by their food sustainability.

Japan, Germany, Spain and Sweden rounded out the top five in an index published the Economist Intelligence Unit (EIU), which graded 34 nations based on food waste, environment-friendly agriculture and quality nutrition.

It is “unethical and immoral” to waste resources when hundreds of millions go hungry across the world, Vytenis Andriukaitis, EU Commissioner for Health and Food Safety, said at the launch of the Food Sustainability Index 2017 on Tuesday.
“We are all responsible, every person and every country,” he said in the Italian city of Milan, according to a statement.

One third of all food produced worldwide, 1.3 billion tons per year, is wasted, according to the UN’s Food and Agriculture Organization.
Food releases planet-warming gases as it decomposes in landfills. The food the world wastes accounts for more greenhouse gas emissions than any country except for China and the United States.

“What is really important is the vision and importance of (food sustainability) in these governments’ agendas and policies,” Irene Mia, global editorial director at the EIU, told the Thomson Reuters Foundation.

“It’s something that is moving up in governments’ agendas across the world.”

Global hunger levels rose for the first time in more than a decade, last year, with 815 million people, more than one in 10 on the planet, going hungry.

France was the first country to introduce specific food waste legislation and loses only 1.8 percent of its total food production each year. It plans to cut this in half by 2025.

“France has taken some important and welcome steps forward including forcing supermarkets to stop throwing away perfectly edible food,” said Meadhbh Bolger, a campaigner at Friends of the Earth Europe.

“This needs to be matched at the European level with a EU-wide binding food waste reduction target.”
High-income countries performed better in the index, but the United States lagged in 21st place, dragged down by poor management of soil and fertilizer in agriculture, and excess consumption of meat, sugar and saturated fats, the study said.

The United Arab Emirates, despite having the highest income per head of the 34 countries, was ranked last, reflecting high food waste of almost 1,000 kilos per person per year, rising obesity and an agriculture sector dependent on depleting water resources, it said.
#FoodMatters #Foodforpoor #Foodforshelters

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France named Europe's top country for food sustainability thanks to war on waste French supermarkets banned from throwing out unsold fruits and vegetables while all restaurants required to provide doggy bags for leftovers under national commitment to recycling. A war on waste food in France, whe... Read more

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#foodmatters#foodforpoor#foodforshelters

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soncee › Beautiful artikle

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#savetheocean#saveourfish#helpearth

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AndrewHicks › New article
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Google has gone green-fingered today to celebrate legendary horticulturist Gertrude Jekyll. The beautiful blooms on the search engine's homepage pay homage to the British garden designer on what would have been her 174th birthday. Born in London on November 29 1843, Jekyll spent most of her life i... Read more

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Borderline › I have been in a garden like this in Sandy, Hertfordshire. There is a Natural Park over there with a house like that on the top of the hill. Really beautiful

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AndrewHicks › New article
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150 years of UFO sightings The truth is out there, these rare photographs of UFO sightings date back as far as 1870. In celebration of World UFO Day 2016, we take a look at the sightings seen across the globe. ‘Aliens have been visiting Earth for THOUSANDS years’ claims ex-defence minister ... Read more

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Is Caffeine & Coffee OK for weight loss? ... You can have more energy to workout harder and longer to burn more calories to lose weight faster and… Caffeine helps your body use or burn mostly only fat for energy while you workout &… As a Bonus: Caffeine increases your metabolism and suppresses y... Read more

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