= Microtest Comparison: 2nd Moments = I've plotted the difference in the sum of the second moments as a function of instrumental magnitude. The y axis plots (Mxx + Myy)_{test 5} - (Mxx + Myy)_{default}. [[Image(montage_dM2.png)]] * [wiki:GPC_BrightStarAstrometry_Microtest Return]