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