| | Globular cluster M10 (Site not responding. Last check: 2007-10-17) |
 | | The globular cluster Messier 10 (NGC 6254) in Ophiuchus, shown from a 2-minute red-light exposure (through clouds) with a Tektronix 2048x2048 CCD at the 2.1-meter telescope of Kitt Peak National Observatory by Bill Keel and Lisa Frattare. |
 | | North is at the top and east to the left, for direct comparison with a chart or eyepiece view. |
 | | In the course of a survey for eclipsing variable stars, Kaspar von Braun and colleagues have found that the difference in reddening from place to place iwthin the cluster is measurable, and its correction is important in deriving the actual Hertzspring-Russell diagram of this cluster. |
| crux.astr.ua.edu /gifimages/m10r.html (144 words) |