|
ETC Source 4
Photometrics |
|
ETC Source 4 - 5°
|
|
Distance
(ft)
|
105
|
125
|
145
|
165
|
|
Field
Diameter (ft)
|
12.6
|
15.0
|
17.4
|
19.8
|
|
Illumination
(fc)
|
124
|
88
|
65
|
50
|
|
|
ETC Source 4 - 10°
|
|
Distance
(ft)
|
85
|
100
|
115
|
130
|
|
Field
Diameter (ft)
|
16.1
|
19.0
|
21.8
|
24.7
|
|
Illumination
(fc)
|
116
|
84
|
63
|
50
|
|
|
ETC Source 4 - 19°
|
|
Distance
(ft)
|
45
|
55
|
65
|
75
|
|
Field
Diameter (ft)
|
14.2
|
17.3
|
20.5
|
23.6
|
|
Illumination
(fc)
|
14.2
|
95
|
68
|
51
|
|
|
ETC Source 4 - 26°
|
|
Distance
(ft)
|
40
|
45
|
50
|
55
|
|
Field
Diameter (ft)
|
17.9
|
20.1
|
22.4
|
24.6
|
|
Illumination
(fc)
|
99
|
79
|
64
|
53
|
|
|
ETC Source 4 - 36°
|
|
Distance
(ft)
|
25
|
30
|
35
|
40
|
|
Field
Diameter (ft)
|
15.8
|
| |
