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USGS Aerial Camera Specifications

USGS Aerial Camera Specifications

Nominal focal length (mm)

  88 153 210 305
Deviation of calibrated focal length from nominal (mm)   ± 4 ± 3 ± 4 ± 5
Minimum angular field of view (°)   120 90 70 50
Maximum useable field angle (°) Optical axis out to   54.5 40 30 22.7
Maximum lens distortion at maximum aperture (µm) Symmetric radial   ± 15 ± 10 ± 20 ± 20
Tangential component of decentering (µm)   8
Maximum deviation of calibrated principal point/point of symmetry from principal point of autocollimation (µm)   30 15 30 30
Stereomodel flatness deviation (µm)   ±17 ± 19
Minimum lens resolving power ([cycles or lp]/mm)  

Angle

         
  59 80 49 48
7.5°   59 80 49 48
15°   49 67 42 28
22.7°   42 57 35 24
30°   35 57 29
35°   30 48
40°   17 40
45°   14
50°   12
54.5°   12

For all cameras:

  • Filter wedge angle <=10 seconds of arc
  • Film magazine platen +/- 13 µm from true plane
  • Film magazine platen id required
  • Fiducial lines of intersection: Lines connecting either opposite side or opposite corner fiducials.
    • The intersection points are defined as the indicated principal points (IPPs). (See diagram)
    • Fiducial angles of intersection: 90° +/- 1 minute
    • Maximum deviation of IPPs from principal point of autocollimation is 30 µm.
  • Eight fiducial marks required – no glass marks.

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Page Last Modified: January 8, 2013