Earth-based telescope takes super-sharp image of Neptune

21 Juillet, 2018, 16:56 | Auteur: Therese Cote
  • Neptune looks beautifully blue in sharp new telescope image

This is an impressive achievement and has allowed Unit 4 to capture high-quality images of subjects, such as the planet Neptune, without the haloing effect added by atmosphere under normal circumstances. The installation released the first results of observations made using laser tomography, the new adaptive optics mode on its GALASCI unit, which works in tandem alongside a spectrograph tool called MUSE mounted to one of the telescopes.

There are no spacecraft now orbiting Neptune, so if astronomers want images of the planet, they need to take them from some 4.6 billion kilometers (2.9 billion miles) away.

The ESO says such sharpness is very hard to attain and allows images to be taken that are comparable in sharpness to those taken with the Hubble telescope that doesn't have to deal with the atmosphere at all.

And just for fun, here's how detailed the VLT's images of surrounding star clusters are.

The Earth's atmosphere can distort the appearance of objects in space, blurring distant objects and causing stars to twinkle. Adaptive optics technology commonly used in telescopes to enhance the atmospheric aberrations, and also used across various applications including biological research, laser communication and retinal imaging.

The Neptune image on the right is without the adaptive optics system in operation and the one on the left after the adaptive optics are switched on.

Remains of eighth man recovered near Leaside property linked to McArthur
Later that month, he was charged with the first-degree murders of Majeed Kayhan, Soroush Mahmudi, and Dean Lisowick. McArthur is responsible for anything more than the eight murders for which he now stands charged", said Idsinga.

La police aurait identifié les empoisonneurs présumés des Skripal — GB
En 2010, il avait finalement été échangé contre d'autres espions par Moscou et s'était installé au Royaume-Uni. Dawn Sturgess, mère de trois enfants âgée de 44 ans, est décédée le 8 juillet.

Return to Boston Lifts Smart's Spirits During Family Hardship | Boston Celtics
But (Camilla) is in good spirits. "Never in a million years [did I think] I'd be able to play for the Boston Celtics ". As a competitor you always want to win championships, and you want to put yourself in the best position to do that.

The newly released photo of Neptune demonstrates the telescope's greater capabilities, showing that it is now possible to capture images from the ground at visible wavelengths that are sharper than those taken by Hubble, a telescope that orbits the earth. The result is very sharp images seen here.

Compared to pictures taken from the same telescope without the adaptive optics technique, the difference is even more striking.

GALACSI works through the Laser Guide Star principle of adaptive optics.

The pioneering MUSE instrument in Narrow-Field Mode, working with the GALACSI adaptive optics module, can now use this new technique to correct for turbulence at different altitudes in the atmosphere.

"It will enable astronomers to study in unprecedented detail fascinating objects such as supermassive black holes at the centers of distant galaxies, jets from young stars, globular clusters, supernovae, planets and their satellites in the solar system and much more."
Of course, having sharp images of objects allows you to study them in better detail, and gives astronomers a better chance to understand what they look like and how they were formed.



Blue Origin subjects its rocket to high-altitude escape test
The launch will also see the New Shepard rocket perform a high-altitude escape motor test to push the ship to its limit. Hindustan Times delivers the news across all social media platforms, on the web, and at your doorstep.

We are Now Living in Meghalayan Age, Experts Say
What makes the Meghalayan Age special is that its birth coincides with a cultural event sparked by a global climatic event. But the Holocene itself can be subdivided, according to the International Commission on Stratigraphy (ICS).

Confirmed: Milan's European Ban Overturned
However, the club announced their decision to appeal and their ban has now been overturned by the Court of Arbitration for Sport. UEFA had questioned a business plan and figures Milan had presented to them amid uncertainty over the club's ownership.

Maharaj grabs nine but Proteas’ batting collapses again
Sri Lanka , on the other hand, will be eager to bat as long as they can, and push for some wickets when getting down to bowling. In hindsight, South Africa might rue their decision to not press for the final wicket in the dying minutes on Friday.

Company's claim to have found gold-laden warship wreck causes market turbulence
A Russian warship from the early 1900s has been discovered off the South Korea coast by a group of explorers. Shinil Group added that it intends to invest 10% of the remainder in tourism projects on Ulleungdo Island.

Freeform's CLOAK & DAGGER Renewed for Second Season, Teasing Classic Villain
At the SDCC Cloak and Dagger panel, Marvel TV boss Jeph Loeb confirmed that Season 2 will start production in the fall, so expect it to hit screens in 2019.

Lacklustre Kenya Sevens knocked out of World Cup
World Cup holders New Zealand lurk in the other half of the draw, having already shown why they are favourites and No.1 seeds. Australia will play France in Sunday (AEST) morning's final four after their last-gasp try was enough to beat Canada 24-19.

Watch the first Glass trailer bring together Split, Unbreakable
Unbreakable , Split and now Glass , the third and presumably final installment in what's shaping up to be a genre-bending trilogy. The upcoming flick brings together the narratives from 2000's Unbreakable and 2016's Split , featuring Bruce Willis , Samuel L.

Vinicius Jr officiellement présenté — Real Madrid
C'est désormais chose faite, puisque le jeune attaquant brésilien (18 ans) a été officiellement présenté aux socios, vendredi à Santiago-Bernabeu.

Manchester City Keen On Miralem Pjanic and Mateo Kovacic
He is training like a young guy, 18 years old. "We tried but players have to go where they go". "But he is with us". Sane was left off the final 23 man squad for Germany's World Cup campaign - which ended after the group stages.