• Monday, Mar 08, 2021
  • Last Update : 05:46 pm

Australian telescope maps 3m galaxies in just 300 hours

  • Published at 03:45 pm December 1st, 2020
Australia Telescope
Radio telescopes are seen in Murchison, Western Australia Reuters

The telescope only needed to combine 903 images to map the sky

A powerful new telescope in outback Australia has mapped vast areas of the universe in record-breaking time, revealing a million new galaxies and opening the way to new discoveries, the country's national science agency said on Tuesday.

The $138 million radio telescope, dubbed the Australian Square Kilometre Array Pathfinder (ASKAP), was able to map about three million galaxies in just 300 hours. Comparable surveys of the sky have taken as long as 10 years.

"It's really a game changer," said astronomer David McConnell, who led the Commonwealth Scientific and Industrial Research Organization (CSIRO) study of the southern sky at the Murchison Radioastronomy Observatory in Western Australia.

What makes this telescope unique is its wide field of view, using receivers designed by CSIRO, which allow it to take panoramic pictures of the sky in sharper detail than before.

The telescope only needed to combine 903 images to map the sky, compared with other all-sky radio surveys that require tens of thousands of images.

"It is more sensitive than previous surveys that have covered the whole sky like this, so we do see more objects than have been seen in the past," McConnell told Reuters.

Having a telescope that can survey the sky in a few weeks or months means the process can be repeated again and again in a relatively short space of time, allowing astronomers to systematically spot and track changes.

"Even with this first pass we've got right now, compared with previous images, we've already found some unusual objects," McConnell said, including some unusual stars that undergo violent outbursts.

He said data gathered in this survey would allow astronomers to find out more about star formation and how galaxies and black holes evolve through statistical analyses.

The initial results were published on Tuesday in the Publications of the Astronomical Society of Australia.

51
Facebook 51
blogger sharing button blogger
buffer sharing button buffer
diaspora sharing button diaspora
digg sharing button digg
douban sharing button douban
email sharing button email
evernote sharing button evernote
flipboard sharing button flipboard
pocket sharing button getpocket
github sharing button github
gmail sharing button gmail
googlebookmarks sharing button googlebookmarks
hackernews sharing button hackernews
instapaper sharing button instapaper
line sharing button line
linkedin sharing button linkedin
livejournal sharing button livejournal
mailru sharing button mailru
medium sharing button medium
meneame sharing button meneame
messenger sharing button messenger
odnoklassniki sharing button odnoklassniki
pinterest sharing button pinterest
print sharing button print
qzone sharing button qzone
reddit sharing button reddit
refind sharing button refind
renren sharing button renren
skype sharing button skype
snapchat sharing button snapchat
surfingbird sharing button surfingbird
telegram sharing button telegram
tumblr sharing button tumblr
twitter sharing button twitter
vk sharing button vk
wechat sharing button wechat
weibo sharing button weibo
whatsapp sharing button whatsapp
wordpress sharing button wordpress
xing sharing button xing
yahoomail sharing button yahoomail