15 GHZ MONITORING OF THE GRAVITATIONAL LENS MG-0414+0534

We report the results of monitoring the four images of the gravitation al lens MG 0414+0534 at 15 GHz. In 35 VLA maps spanning 180 days, we m easure root mean square variations in the image light curves of simila r to 3.5% mostly due to variations in the flux density calibration. Th e flux ratios, which are independent of flux density calibration varia tions, show root mean square variability of 1%-3%. Extensive simulatio ns of the data analysis process show that the observed variations in t he flux ratios are likely to be due entirely to errors in the deconvol ution process. It is possible that some of the observed variation is d ue to the source; however, the signal-to-noise ratio is too small to m ake a time delay determination using a data set of this size.