Calculate Satellite sighting

With SaVoir is possible to find time windows where it is possible to sight satellites from a given location under dusk and the satellite hit by the sun.

A satellite will be visible with the naked-eye if

There is a line-of-sight between observer and satellite
The satellite is hit by the sun,
The observer location is at dusk, so that there is sufficient twilight to permit visibility of stars. This condition occurs when the sun is at least 6 degrees below the horizon.
The satellite height is within defined limits
The sky is sufficiently clear, without clouds. Unfortunately this condition cannot be evaluated by the software, so a cloudless sky will always be assumed.

To obtain a timeline of satellite sighting opportunities do as follows

Select one or more satellites one the scenario pane, so that the satellites are visible.
Open menu Visibilities / Satellite sighting ... This will open a dialogue to provide time boundaries of analysis, observer location, minimum elevation over the horizon to consider a visibility viable, and satellite height boundaries.

Tip: The observer location is initialized with the current centre of the map view.

Select start and end time and eclipse location , click on OK.
A Gantt with Satellite sighting will appear