Find Rotation periods for cluster stars (Pleiades from http://vizier.cfa.harvard.edu/viz-bin/VizieR-3?-source=J/ApJ/822/81/table4 and http://vizier.cfa.harvard.edu/viz-bin/VizieR-3?-source=J/AJ/152/113/table2 ; Praesepe from http://vizier.cfa.harvard.edu/viz-bin/VizieR-3?-source=J/ApJ/842/83/table3 ; Hyades from http://vizier.cfa.harvard.edu/viz-bin/VizieR-3?-source=J/ApJ/822/47/table4 ) [NOTE: THIS CAN BE DONE IN TOPCAT BY DOWNLOADING THE TABLES LINKED ABOVE AND DOING A LOCAL PAIR MATCH] #15