Hemisfer main window

The main window of Hemisfer shows the following elements:
files main menu button bar button bar picture properties picture properties site threshold colours lens results results horizon position horizon position north direction north direction north markers ground slope ground slope rings and sectors rings and sectors Tooltip: (X;Y) : (θ;φ) : (R;G;B) Hemisfer main window

Legend:
Legend

The initial zoom factor is set according to the size of the picture relatively to the display area of Hemisfer's main window.