C 10, TM 9-2350-230-12
TABLE 2-9. OPERATION OF M119 OR M127 TELESCOPE, XM44 SERIES PERISCOPE,
AND ARMAMENT BORESIGHT PROCEDURE - Continued
STEP
PROCEDURE
FIG/ITEM
NOTE. Operation, parallax adjustments, and boresighting
can be performed with the M127 Telescope in either of the two
power (8X or 12X) positions.
PARALLAX ADJUSTMENTS -
TELESCOPE M119 OR M127 AND MOUNT M149
11
Parallax adjustment between the telescope M119 or M127 and mount
M149 is a screwdriver adjustment and is accomplished as deemed
necessary by the operator. The control is located on the upper
side of the telescope above the filter selector lever. While
observing a target at 1200 meters through the eyepiece, and the
vertical reticle line adjacent to the target reference, move the
head up and down and sideways. If the reticle marking of the target
seems to move, adjust screw to obtain minimum parallax between
the target and the reticle as the eye is moved back and forth across
the eyepiece.
BORESIGHTING M119 OR M127 TELESCOPE CONV. RETICLE PATTERN,
Pull and turn elevation and azimuth knobs until conventional reticle
2-23/E and
is aligned with aiming point.
13
Slip scales on elevation and azimuth boresight knobs to position "1".
BORESIGHTING M119 OR M127 TELESCOPE MISSILE RETICLE PATTERS
14
Turn FIRE CONTROL selector to MISSILE position. The missile
reticle will appear in the telescope.
15
View through telescope but do not adjust.
NOTE. Distant aiming point (any portion) must align with upper
square area of missile reticle pattern in telescope. If not, proceed
with tracker alignment procedure (table 2-12, step 12) and recheck.
If reticle is still not aligned, notify organizational maintenance
personnel.
OPERATING PROCEDURES FOR XM44 SERIES PERISCOPE
NOTE To be used when ambient light conditions do not permit
use of telescope.
16
Close periscope unity power window cover.
NOTE. If the periscope is not equipped with a unity power
window cover plate, place tape or other material over the unity
power window to avoid backlighting the system.
2-37
