. FAR SIDE 
NEAR SIDE 
FIG. 1 
TABLE 1 
NOMINAL CHARACTERISTICS OF APOLLO 15 METRIC SYSTEM PHOTOGRAPHY 
Element 
Focal Length 
Orbital Altitude 
Scale 
Angular Coverage of 
Lens 
Resolution 
Lens Distortion 
Format 
Calibrated Fiducial 
Forward Overlap 
Sidelap 
Image Motion 
Compensation 
Reseau 
Terrain Photography 
  
76 millimeters 
110 kilometers 
1:1,447,000 
74° x 74? 
20 meters 
0-45 micrometers 
114 x 114 mm image 
area on 127 mm film 
„SG; artificially 
illuminated marks 
18% 
25-100% 
Variable compensa- 
tion 
10 mm interval 
  
Stellar Photography 
76 millimeters 
110 kilometers 
249 x 18° 
5.5 magnitude 
0-10 micrometers 
22 x 32 mm image 
area on 35 mm film 
4 artificially 
illuminated marks 
None 
5 mm interval