The StellarMate Plus Manual
289 / 341
This tool displays the positions of Jupiter's four largest moons (Io, Europa,
Ganymede, and Callisto) relative to Jupiter, as a function of time. Time is plotted
vertically; the units are days and “time=0.0” corresponds to the current simulation
time. The horizontal axis displays the angular offset from Jupiter's position, in
arcminutes. The offset is measured along the direction of Jupiter's equator. Each
moon's position as a function of time traces a sinusoidal path in the plot, as the
moon orbits around Jupiter. Each track is assigned a different color to distinguish
it from the others; the name labels at the top of the window indicate the color
used by each moon (i.e. red for Io, yellow for Europa, green for Callisto and blue
for Ganymede).
The plot can be manipulated with the keyboard. The time axis can be expanded
or compressed using the + and - keys. The time displayed at the center of the
window can be changed with the [ and ] keys.
18.4.10 Observation Planner
To Next Page
Loading...
