Observing Tools

• Sun and Moon
  
    Times of twilight, rise, set and transit twilight
    Azimuth of rise and set and altitude of transit


• Timers
  
    Set independent timers that run on your computer
    Mark and time events


• Moons of Jupiter
  
    Sky & Telescope's Jupiter's Moons Calculator
    Now and for a date and time you enter


• Moons of Saturn
  
    Sky & Telescope's Saturn's Moons Calculator
    Now and for a date and time you enter


• Moons of Uranus
  
    Sky & Telescope's Uranus' Moons Calculator
    Now and for a date and time you enter


• Neptune's moon Triton
  
    Sky & Telescope's Triton Calculator
    Now and for a date and time you enter