M11 - An opern cluster with an age of 0.15 Gyr and distance of 1.9 kpc. M13 - A globular cluster with an age of ~ 15 Gyr and a distance of 7.7 kpc.

Pictured above are two, 6 minute, I-band expsoures of the two clusters. In addition, two exposures of the same exposure time were made in the V-band filter. Photometry was done on the stars using DAOPHOT, and the intrumental color-magnitude diagrams are shown below.