Menu
Astronomers linked globally via 'lightpath'

Astronomers linked globally via 'lightpath'

AARNet broke new ground at the APAN24 (Asia-Pacific Advanced Network) meeting in Xi'an, China yesterday by setting up and successfully linking astronomers across the world via "lightpath".

The demonstration involving collaborators of the EXPReS project (Express Production Real-time e-VLBI Service) conducted the first successful e-VLBI observations to jointly use telescopes in China and Australia, China and Europe. The demonstration covered an impressive 41,000kms in total with consistent data transfer rates of 250 Mbps.

The data was transferred from Mopra to Sydney over AARNet lightpath, then on to AARNet's lightpath along Southern Cross Cable Network (SCCN), SXTransport South to Los Angeles, then by CENIC to Seattle, CaNet to Chicago and then via SurfNet to Amsterdam and then on to JiVE.

The other route involved Shanghai via CSTNet and the across ORIENT to Copenhagen, GEANT to Netherlands and SURFNet then on to Jive. AARNet CEO, Chris Hancock, said Thursday was a first for researchers and the astronomy community in Australia and demonstrates the real value of investing in high-speed infrastructure.

"To connect across such a vast area via dedicated lightpaths to such far-away telescopes is a phenomenal achievement," Hancock said. A lightpath is a direct network path from telescope to computer for which a permanent or temporary connection of fibre-optic cables is configured without using routers.

There is no competing traffic on a lightpath therefore the data reaches its destination without congestion and enables real-time transfer.

e-VLBI is a technique by which widely separated radio telescopes simultaneously observe the same region of sky, and data from each telescope are sampled and sent to a central processor via high-speed communication networks operating in real-time. "Traditionally, VLBI has been done by recording the data as observed at each telescope onto a magnetic disc or tape and shipping those recordings to a central location - this could take months," Hancock said.


Follow Us

Join the newsletter!

Or

Sign up to gain exclusive access to email subscriptions, event invitations, competitions, giveaways, and much more.

Membership is free, and your security and privacy remain protected. View our privacy policy before signing up.

Error: Please check your email address.

Featured

Slideshows

The making of an MSSP: a blueprint for growth in NZ

The making of an MSSP: a blueprint for growth in NZ

Partners are actively building out security practices and services to match, yet remain challenged by a lack of guidance in the market. This exclusive Reseller News Roundtable - in association with Sophos - assessed the making of an MSSP, outlining the blueprint for growth and how partners can differentiate in New Zealand.

The making of an MSSP: a blueprint for growth in NZ
Reseller News Platinum Club celebrates leading partners in 2018

Reseller News Platinum Club celebrates leading partners in 2018

The leading players of the New Zealand channel came together to celebrate a year of achievement at the inaugural Reseller News Platinum Club lunch in Auckland. Following the Reseller News Innovation Awards, Platinum Club provides a platform to showcase the top performing partners and start-ups of the past 12 months, with more than ​​50 organisations in the spotlight.​​​

Reseller News Platinum Club celebrates leading partners in 2018
Meet the top performing HP partners in NZ

Meet the top performing HP partners in NZ

HP has honoured its leading partners in New Zealand during 2018, following 12 months of growth through the local channel. Unveiled during the fourth running of the ceremony in Auckland, the awards recognise and celebrate excellence, growth, consistency and engagement of standout Kiwi partners.

Meet the top performing HP partners in NZ
Show Comments