[x] , (9c? + 522) (9Nyg — 10 [x]) 
  
  
  
  
dx LT — 
e 9 92742 
2 9 du — pi oy 
dy = — yl T (9c2 +52?) (9Ng4 — iO [v]) 
? 9 9272 
dz mL — cNo1 
? 16a 
c¢Ngo 
de ZZ — = 
16ah 
de me 
103a2h 
_ __ <2%(9N94 — 10 [y]) 
de = — BEATS 
103a2h 
[x]2 + [y]? _ Nas? + No? 
  
joy] == [mn] ril E. = 
—L (9Nss — 10[x])2 + (9N94 — 10[y1)? 
  
1854 
s = fw 
"V5 
Here are 
Ng, — Ns1 + V2(— X153 + X452 — Yıs2 + Yass) 
Ngg = N52 + V2(=152 —xasa T Yass, 
N93 — 2N53 + X153 + Xa52 
Ng4 — 2N54 + Y1s2 + Y453 
N51 — Ng4 were defined above. 
  
  
In order to facilitate the computations special forms were used. 
3. Results of the experiments in 1956 
(24) 
(25) 
(26) 
(27) 
(28) 
(29) 
(30) 
(31) 
(32) 
(33) 
(34) 
In 1956 four cameras were tested in the tower primarily in order to 
collect experience. The following cameras were used: 
18