Traditional Very Long Baseline Interferometry (VLBI) observations are performed by telescopes distributed across several countries that simultaneously point at the same source.
Tavapärasel ülipika baasiga interferomeetria (Very Long Baseline Interferometry, VLBI) meetodil vaatlemiseks suunatakse mitmes riigis paiknevad teleskoobid ühel ajal samale vaatlusobjektile.