Sokkia SRX1, Руководство оператора, Страница: 63 / 184

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11. TARGET SIGHTING

• When sighting the target, strong light shining directly into the objective lens may cause the
instrument to malfunction. Protect the objective lens from direct light by attaching the lens hood.
X PROCEDURE
1. Look through the telescope eyepiece at a bright and
featureless background.
Turn the eyepiece clockwise, then counterclockwise
little by little until just before the reticle image becomes
focussed.
Using these procedures, frequent reticle refocussing is
not necessary, since your eye is focussed at infinity.
2. Use the peep sight to bring the target into the field of
view. Turn the vertical and horizontal jogging knobs for
fine sighting adjustments.
3. Turn the telescope focussing ring to focus on the
target.
Turn the vertical and horizontal fine motion screws to
align the target with the reticle.
The last adjustment of each fine motion screw should
be in the clockwise direction.
4. Readjust the focus until there is no parallax
Readjust the focus with the focussing ring until there is
no parallax between the target image and the reticle.

Eliminating parallax
This is the relative displacement of the target image with respect to the reticle when the
observer's head is moved slightly before the eyepiece.
Parallax will introduce reading errors and must be removed before observations are taken.
Parallax can be removed by refocussing the reticle.
11.3 Manually Sighting the Target