Where is it
Many beautiful space objects were discovered in the mid-eighteenth century. In those years, astronomy was in great expansion. In 1764, Messier discovered an interesting globular star cluster. This is one of the less visible objects. However, with approximately 8 apparent magnitudes, it should be easily visible. Messier 9 can be found in the direction of the constellation Ophiuchus. It is estimated that there are at least 100,000 stars in the area. And those stars are very condensed. The distance of this star cluster is not certain. In the early 1990s, the distance was estimated at 26,000 light-years. However, a different distance was calculated a few years later. According to Racio-Blanco calculations, object is 46,000 light-years away. The distance varies greatly by this, and calculations continue.
Visibility Messier 9
There is another problem. Therefore, do not rush. This star cluster is not easy to separate from the many stars in the Milky Way. Above all, to find this object, start with stronger binoculars. However, when you find object, don’t expect much. You will see something like a stain of light. It is similar with smaller telescopes. Even with an 8-inch telescope, the star cluster doesn’t show much more. A nucleus with a small faint halo is seen. In other words, you need a telescope with 12 or more inches. Then Messier 9 shows up better. Remember that this is a slightly weaker space object. Therefore, it is interesting when you find it.