The information between the two information is very similar.
Elevation: 47.8 / 47.8
Compass Reading: 154.6 / 156.5
Skew: -13.4/ -13.4
Two degrees difference in the compass reading is nothing! This is a starting point. It is highly unlikely that anyone of us could just aim a dish using only a compass and angle finder. To many variables exist. I am not even sure that I could resolve a dish aiming to two degrees on a compass! Two degrees difference of dish rotation on a mast is about 1/8th of an inch.
The mechanical assembly of the dish and regional magnetic variations will induce more deviation than this.
Elevation: 47.8 / 47.8
Compass Reading: 154.6 / 156.5
Skew: -13.4/ -13.4
Two degrees difference in the compass reading is nothing! This is a starting point. It is highly unlikely that anyone of us could just aim a dish using only a compass and angle finder. To many variables exist. I am not even sure that I could resolve a dish aiming to two degrees on a compass! Two degrees difference of dish rotation on a mast is about 1/8th of an inch.
The mechanical assembly of the dish and regional magnetic variations will induce more deviation than this.