com- 
—]14 
mera 
ation 
nedi- 
mage 
l'able 
  
  
AY 
08 40 
k 
X 
08 20 
M 
p 
Qormm 
  
Diagram 13. Diagram of residual coordinate errors after adjustment in the five 
indicated points. Aviogon. Plate negative. 
4.221 Determination of the af finity 
In order to determine the affinity two different enlargement factors 
dc, and dc, are introduced in the basic differential formulae. These 
J . 
formulae are written as follows: 
35