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The Sun's gravitational field deflects the apparent positions of closeobjects in accordance with the formulae of general relativity. Opticalastrometry is used to test the prediction, but only with the stars close to theSun and only during total Solar eclipses. Geodetic Very Long BaselineInterferometry (VLBI) is capable of measuring the deflection of the light fromdistant radio sources anytime and across the whole sky. We show that the effectof light deflection is equivalent to the gravitational delay calculated duringthe reduction of VLBI data. All reference radio sources display an annualcircular motion with the magnitude proportional to their ecliptic latitude. Inparticular, radio sources near the ecliptic pole draw an annual circle withmagnitude of 4 mas. This effect could be easily measured with the currentprecision of the geodetic VLBI data.

The deflection of light induced by the Sun's gravitational field and measured with geodetic VLBI