18 
TABLE 1.61:1. 
Glass plate negatives. 
Image 
No 
Radius of circle in image 
mm 
Camera 
0 
20.0 
43.0 
63.9 
89.1 
106.6 
127.8 
constant 
c 
mm 
Rad 
ial distortion pm 
01 
+7.4 
+5.7 
+3.8 
+0.5 
-8.0 
-4.2 
152.261 
02 
+7.9 
+5. 2 
+5. 6 
+u. 5 
-9.8 
-9.6 
152.256 
Average 
+7.6 
+5.4 
+4.7 
+ 0.5 
-8.9 
-6.9 
152.258 
Standard error 
of unit wei£ 
;ht pm 
Averages 
01 
2.0 
1.9 
1.3 
3. 7 
3. 5 
4.9 
3.1 
02 
2.4 
2.4 
2.4 
3.0 
2.5 
2.2 
2. 5 
s 
2.2 
2.2 
1.9 
3.4 
3.0 
3.7 
2.8 
m 
Radial resolutk 
)n lines /mm 
01 
67 
62 
60 
50 
50 
50 
30 
52. 5 
' 02 
80 
67 
64 
54 
60 
57 
44 
61 
Average 
73.5 
64. 5 
62 
52 
55 
53. 5 
31 
56. 5 
Tangential resolution lin 
es/min 
01 
67 
62 
• 62 
54 
52 
44 
38 
54 ' 
02 
80 
67 
64 
54 
56 
57 
38 
59. 5 
Average 
73.5 
64.5 
63 
54 
54 
50. 5 
38 
56.5