Aerial images

Normal angle photography in 2004 - Llight 04403 by NLS
  • Wild RC30 film-based camera (Brochure by Leica-Helava)
  • Large-scale 1:8000 on CIR film (Kodak info on Aerochrome III/ 1443), three strips were flown
  • Scanning at 15 microns (µm) => GSD (Ground Sampling Density) of 8000 × 0.000015 m = 0.12 m
  • RGB-images, 8 bits per channel
  • 21-cm focal lenght, 23 × 23 cm film => ± 27° along track FOV, ± 35° diagonal FOV
  • 60 % forward and side overlaps => minimum of 4 views per target


Plot 41  seen in a back-lighted view of flight 04403    Sample of an RC30 image, plot 41

Multispecral Digital photography in 2006 (flight FM06124)
  • Vexcel UltraCam D digital frame camera (Datasheet)
  • Large-scale 1:10000 on five CCD-arrays, three strips were flown
  • Panchromatic CCD-array 11500 × 7500 pixels, 9 µm, 9 cm GSD
  • R, G, B, IR CCD-arrays 3680 × 2400 pixels, 28.5 µm, 28 cm GSD
  • Multispecral data was pan-sharpened into 9 µm "CIR-images" (RGB): R = IR, G = R, B = G
  • 10.52 cm focal lenght and 10 x 6 cm CCD-arrays => ± 16° along track FOV, ± 26° across track FOV, ± 29° diagonal FOV => normal-angle camera with weak geometry for Z-estimation. 
  • 60 % forward and 30 % side overlaps => minimum of 2 views per target
Plot 41 seen in a near nadir Vexcel view (PAN-sharpened CIR)    Sample of a Vexcel image, plot 41