Transient Detections and Other Real-Time Data Processing from MASTER-VWF Wide-Field Cameras
Figure 6
Color-color diagrams are used to calibrate instrumental magnitudes. On these plots and the zero point is of no importance and cannot be determined at the this stage. Note that the width of the sequences is real and due to the fact that stars have different spectral types, and not due to measurement errors. R-I = 0.82 clustered connected with non very w.
