This is one of the finest globular star clusters visible from the northern hemisphere. It distance is about 21000 lightyears, and it consists of several 100000s of stars.
Canon EOS 20D Modified Canon 20D mounted on a Vixen R200SSDG(8"/F4)+ Televue Paracorr + IDAS-LPS filter. 12x300sec/ISO800. Calibration and stacking, averaging, color balancing, sharpening in Images Plus and Photoshop CS2.