I was just looking at your picture again, and realized that it probably wasn't the Large Magellanic cloud. In ED it looks like this:
So you're right. It's the Pleiades, also called Messier 45 or just M45. (That one is also very beautiful throgh a telescope or even binoculars!)
Edit: High res image of the real M45:
Messier was an astronomer back when astronomy was relatively young. Back then kings were terrified by comets. Not because they feared them hitting the Earth, but because they were believed to be bad omens. Therefore it could be a bad decision to start a war with a neighboring country, if a comet was about to appear in the night sky. This was one of the main occupations of astronomers back then. Predicting comets. Messier was looking for them as well, but he was distracted by all the faint fuzzies in the night sky, so he decided to make a catalog of the fuzzies he knew not to be comets. That became the Messier Catalog, which even today is extremely popular among amateur astronomers. Many of the popular objects in the night sky are in the catalog. Andromeda is called M31, and the Crab Nebula is called M1.
en.wikipedia.org
Messier didn't know what that fuzzies were, so he didn't distinguish between globular clusters, open clusters, different nebulae and galaxies. Nowadays we know the difference, but still use the Messier numbers. In professional astronomy there are other catalogs like NGC and HIP which are much larger than the original ~100 objects Messier found, but his achievement is still amazing.