Hello. Currently I'm in my third year of university. I would like to work in the field of observational astronomy (not so much theoretical astronomy). In about two weeks I'm going to buy a new laptop portable computer in the 2000€ range. Firstly I was thinking to buy a Microsoft Windows PC, since every single one of my computers except one were Windows PCs (the one which wasn't was an Apple Mac OS X). But then I came across a thread on a Forum (I don't remember the name of the Forum) where someone said that astronomers usually don't use Windows PCs and that they generally use other operating systems. So I have some questions: - Is it true that astronomers don't usually use Windows like everyone else? If yes, why? - Which operating system(s) do astronomers most often use on their computers? - Do you think it would be a wise decision for me to buy a computer with an operating system different than Windows? (so that I may get accustomed to the operating system which I will need to use when I'll be an astronomer) If yes, which operating system would you suggest me? Thanks in advance for your answers.