First "real-time" success for European radio astronomy
The first ever real-time European “eVLBI” image was produced at JIVE in Dwingeloo on 28 April. Signals from three radio telescopes of the European VLBI Network (EVN) were sent directly via fibre networks into the Data Processor at JIVE and correlated, without the data at any time having been stored on disk. This is called “eVLBI”: a technique to link the telescopes together through an electronic network. eVLBI has the potential to realise much higher data rates, and make data analysis in real time a possibility. In other words: live images from the edge of the Universe can be obtained.
Remote recording at JIVE
During a recent (November 7) experiment, a single scan of Westerbork data was sent directly to JIVE via the Wb-JIVE optical-fibre, where it was recorded on a Mark5 unit. The same data were also recorded on tape at Westerbork. Last week the tape and disk data were correlated, giving good confidence that the remote recording was good. Final confirmation was achieved when the Westerbork disk was correlated with Effelsberg data - The data recording rate was 256Mb/s