Comparison of SiO maser distribution from the VLBA observation (squares) on 2009 May 25 and VLA observation (circles) on 2008 December 20, after cross-registration (see the text). The sizes of the markers are proportional to the logarithm of their flux densities. The V_LSR of the maser spots is color-coded as indicated by the color bar on the right side. The position of the central star is indicated as the star. The solid circle and dotted circle denote the stellar diameter of 22 mas from this paper and 16 mas from Blöcker et al. (2001), respectively. (This figure is available in color in electronic form.)