TM-9-1240-400-34&P Technical Manual for M109 Telescopes and Mounts Download
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TM 9-1240-400-34&P 1-10 EQUIPMENT DATA. All decimal measurements have been rounded off to the nearest tenth. a. M115 Panoramic Telescope. (1) Magnification ................................................................................................................................. 4 power (2) Field of View............................................................................................................................. 10 degrees (3) Exit Pupil Diameter ............................................................................................................ 0.2 in (4.1 mm) (4) EFL, Objective .................................................................................................................. 4.0 in (10.1 cm) (5) EFL, Eyepiece..................................................................................................................... 1.0 in (2.5 cm) (6) Elevation Range............................................................................................................. +300 to -300 mils (7) Length ............................................................................................................................... 9.6 in (24.4 cm) (8) Height .............................................................................................................................. 11.0 in (27.9 cm) (9) Weight ....................................................................................................................8.0 lb (3.6 kg) (approx) b. M138 Telescope Mount. (1) Deflection (Azimuth)........................................................................................................... +12 to -12 mils (2) Elevation .................................................................................................................. +444.5 to -444.5 mils (3) Length ............................................................................................................................... 9.6 in (24.4 cm) (4) Width ................................................................................................................................. 5.3 in (13.3 cm) (5) Height ................................................................................................................................ 4.5 in (11.4 cm) (6) Weight .................................................................................................................................. 3.0 lb (1.4 kg) c. M137 Telescope Mount. (1) Elevation ........................................................................................................................ +1333 to -89 mils (2) Elevation Correction............................................................................................................... +9 to -9 mils (3) Cross-Level (Cant) ....................................................................................................... +20 to -20 degrees (4) Incremental Reading (Counters) ........................................................................................................ 1 mil (5) Length ............................................................................................................................. 14.1 in (35.9 cm) (6) Width ................................................................................................................................. 9.8 in (25.8 cm) (7) Height ................................................................................................................................. 13 in (33.0 cm) (8) Weight .............................................................................................................................. 38.0 lb (17.3 kg) d. M139 Elbow Telescope. (1) Magnification ................................................................................................................................. 3 power (2) Field of View................................................................................................................ 13 degrees, 20 min (3) EFL, Objective .................................................................................................................. 4.1 in (10.5 cm) (4) EFL, Eyepiece..................................................................................................................... 1.4 in (3.5 cm) (5) Length ............................................................................................................................... 4.3 in (10.8 cm) (6) Height ................................................................................................................................ 5.8 in (14.6 cm) (7) Weight .................................................................................................................................. 2.4 lb (1.1 kg) 1-8