Earth-based telescope takes super-sharp image of Neptune

21 Juillet, 2018, 16:56 | Auteur: Therese Cote
  • Earth-based telescope takes super-sharp image of Neptune

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.

Embraer scores on Day 2 of Farnborough Air Show
But the planemaker's hopes of securing an immediate extra order for 100 smaller A321neo from AirAsia as it haggled over the expanded wide-body order were dashed.

Manchester United 1-1 Club America: Juan Mata goal earns friendly draw
The Premier League side were without many key players after the World Cup. The action for the cross for the goal is a handsome action.

Stevie J & Faith Evans Got Married In Las Vegas!
The sources think Stevie J knew if Faith started telling friends and family she was marrying him, they would talk her out of it. Stevie, 46, is a father of six, and appeared on six series of Love & Hip-Hop Atlanta with then girlfriend Joseline Hernandez .

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.



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).

Euro U19 : la France de Kamara se relance
Après une défaite contre l'Ukraine pour son premier match, l'équipe de France U19 s'est révoltée en écrasant la Turquie (5-0). En cas de victoire, ils seront assurés de prendre l'une des 2 places qualificatives pour les demi-finales.

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.

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.

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.

De Laurentiis revient sur les rumeurs Cavani et Di María
Toujours selon le média transalpin, la bonne entente entre Benzema et son président pourrait faciliter un départ. Il y a un accord entre (le nouvel entraîneur Carlo) Ancelotti et moi pour acheter uniquement de jeunes joueurs.

La campagne pro-Brexit condamnée pour infraction à la loi électorale
Les affaires ont également été transmises à la police et pourraient donner lieu à des poursuites. De son côté, Darren Grimes s'est dit "choqué" et "déçu" par la décision de la Commission.

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.

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.

U.S. officials still in the dark on what Trump discussed with Putin
He mentioned London-based financier Bill Browder, a onetime investor in Russian Federation who said he exposed corruption there. She said: "I think it must once again become normal for Russian and American presidents to meet". "I don't see that".