. 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