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Memaparkan catatan dengan label Pilot Balloon Theodolite. Papar semua catatan
Memaparkan catatan dengan label Pilot Balloon Theodolite. Papar semua catatan

Ahad, 8 April 2012

Pilot Balloon Theodolite

400-8403 Pilot Balloon Observation Theodolite

Specifications

  • Main telescope: Bent axis-type 21 power, 2° field of view
  • 42 mm dia achromatic doublet objective
  • 100' minimum focus
  • 40 mm effective aperture
  • Resolves to 4 seconds
  • Finder telescope: 4 power, 10° field of view
  • 17 mm dia achromatic doublet objective
  • 15 mm effective aperture
  • Lens coating: Low reflective
  • Length: 13.1"
  • Reticule: Spider-web cross hair assembly
  • Eyepiece: Four element achromatic
  • 0.074" dia exit pupil
  • 15/32" eye relief
  • Soft, molded eye guard
  • Sights: Fixed and folded