Alas! Needed to add Earth's inclination angle as a workaround for the source!

src/pulsaranimationwidget.cpp

@@ -357,6 +357,10 @@ void PulsarAnimationWidget::paintGL()
     // draw source
     glPushMatrix();
     {
+        // The second rotation isn't right:
+        // -> should be around x-axis (not z) and not mess up source iota from below!
+        // -> does the x-axis not rotate with its object (around the first y-rotation)?
+        // -> putting them in their own matrix doesn't help either
         glRotatef(-31.384, 0.0, 0.0, 1.0);
         glRotatef(45.093, 0.0, 1.0, 0.0);
 
@@ -364,7 +368,7 @@ void PulsarAnimationWidget::paintGL()
 
         glPushMatrix();
         {
-            glRotatef(m_sourceInclination, 0.0, 0.0, 1.0);
+            glRotatef(m_sourceInclination+23.5, 0.0, 0.0, 1.0);
             glRotatef(180, 0.0, 1.0, 0.0);
             glRotatef(m_sourceIota, 0.0, 1.0, 0.0);