telescope-term

https://github.com/isene/telescope

With this program you can list your telescopes and eyepieces and get a set of calculations done for each scope and for the combination of scope and eyepiece. Easy interface. Run the program, then hit '?' to show the help file. Version 2.0: Breaking change - requires rcurses 6.0.0+ with explicit initialization for Ruby 3.4+ compatibility.