The neutron star X-ray binary Aql X-1 shows quasi-periodic outbursts about once a year. These active states are relatively well covered in optical/infrared and X-ray domains. In contrast, at radio wavelengths the observations are very scarce (IAUC # 5112 ; ATEL # 286; ATEL # 491).
Following the reports of a new outburst of the object (ATEL # 1970; ATEL #1977), we observed Aql X-1 on March 25th, 2009 between 03:00-10:00 UT at 5 GHz with the European VLBI Network (EVN) using the e-VLBI technique. The radio telescopes participating in the experiment were: Effelsberg, Medicina, Onsala 25m, Torun, Westerbork, Jodrell Bank MkII and Knockin. Due to severe weather conditions or technical problems, some of the effective observing time was lost.
