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This is the highest resolution photo taken of the sun, ever

May 6, 2022 by Alex Baker Leave a Comment

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An 83 megapixel image of the sun has been captured by the Solar Obiter in a joint project by the European Space Agency (ESA) and NASA. The images were taken in March when the when the spacecraft was crossing directly between the Earth and Sun and show unprecedented detail.

The image was taken by the Extreme Ultraviolet Imager (EUI) and is the highest resolution image ever taken of the Sun’s full disc and outer atmosphere, the corona.

 

The Solar Orbiter was roughly 75 million kilometres away from the sun when it took the photos. That’s about half way between Earth and the Sun. The telescope of the EUI takes images of such high resolution that it needed to take 25 separate photos to cover the entire area of the star. The full image was captured over a period of more than four hours because each tile takes about 10 minutes, including the time for the spacecraft to point from one segment to the next.

In total, the final image contains more than 83 million pixels in a 9148 x 9112 pixel grid. That’s a resolution ten times larger than a 4K TV screen can display.

If you look closely at the 2 o’clock (near the image of the Earth for scale) and 8 o’clock positions on the edges of the Sun, you can see dark filaments projecting away from the surface. These ‘prominences’ are prone to erupt, throwing huge quantities of coronal gas into space and creating ‘space weather’ storms.

 

At the same time the Spectral Imaging of the Coronal Environment (SPICE) instrument was also recording information and images, taking by far the best photo of the Sun to date, and the first full sun image in 50 years using the Lyman-beta wavelength of ultraviolet light that is emitted by hydrogen gas.

In the SPICE sequence of images purple corresponds to hydrogen gas at a temperature of 10 000°C, blue to carbon at 32 000°C, green to oxygen at 320 000°C, yellow to neon at 630 000°C.

This will allow solar physicists to trace the eruptions happening in the corona down through the lower atmospheric layers. It will also allow them to study how the temperature is rising through the ascending atmospheric layers. This is puzzling to scientists because normally the temperature drops as you move away from a hot object. Above the Sun, however, the corona reaches a million degrees Celsius whereas the surface is only about 5000°C. Investigating this mystery is one of the key scientific objectives of Solar Orbiter.

Over the coming years the Solar Obiter will repeatedly fly this close to the Sun, gradually raising its orientation to view the Sun’s previously unobserved polar regions.

83 megapixels is pretty impressive, especially of something so difficult to capture as the sun! We can expect more fascinating hi-res images of our star in the next few years.

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Filed Under: news Tagged With: Astrophotography, ESA, NASA, Sun, Ultra High Resolution

About Alex Baker

Alex Baker is a portrait and lifestyle driven photographer based in Valencia, Spain. She works on a range of projects from commercial to fine art and has had work featured in publications such as The Daily Mail, Conde Nast Traveller and El Mundo, and has exhibited work across Europe

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Alex Baker is a portrait and lifestyle driven photographer based in Valencia, Spain. She works on a range of projects from commercial to fine art and has had work featured in publications such as The Daily Mail, Conde Nast Traveller and El Mundo, and has exhibited work across Europe

Dave Williams is an accomplished travel photographer, writer, and best-selling author from the UK. He is also a photography educator and published Aurora expert. Dave has traveled extensively in recent years, capturing stunning images from around the world in a modified van. His work has been featured in various publications and he has worked with notable brands such as Skoda, EE, Boeing, Huawei, Microsoft, BMW, Conde Nast, Electronic Arts, Discovery, BBC, The Guardian, ESPN, NBC, and many others.

John Aldred is a photographer with over 20 years of experience in the portrait and commercial worlds. He is based in Scotland and has been an early adopter - and occasional beta tester - of almost every digital imaging technology in that time. As well as his creative visual work, John uses 3D printing, electronics and programming to create his own photography and filmmaking tools and consults for a number of brands across the industry.

Dunja Djudjic is a multi-talented artist based in Novi Sad, Serbia. With 15 years of experience as a photographer, she specializes in capturing the beauty of nature, travel, and fine art. In addition to her photography, Dunja also expresses her creativity through writing, embroidery, and jewelry making.

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