Color-magnitude photometry to the main sequence for the 'anomalous' globular cluster Palomar 12

New photoelectric and photographic color-magnitude photometry to V 22 is presented for the globular cluster Palomar 12. The C-M diagram morphology most closely resembles 47 Tucanae, and all combined evidence suggests that Pal 12 is a moderately metal-rich cluster in agreement with the recent red-giant abundance studies by Cohen. A preliminary age estimate of 11 billion years for Pal 12 by fitting our main-sequence data to the Yale isochrones in the (Mv, B - V)-plane is described