Use this helpful Bash script when stargazing: 
We often talk about Linux being used on servers and by developers, but it is used in many other fields too, including astronomy. There are a lot of astronomy tools available for Linux, such as sky maps, star charts, and interfaces to telescope drive systems for controlling your telescope. But one challenge for astronomers is using a computer while keeping their eyes working in the dark.
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Have you tried: Sailing in Africa ?