10 SETTING ATMOSPHERIC CORRECTION
10-57
Note 1): First, loosen the capstan adjustment screw on the side to which the vertical cross-hair
line must be moved. Then tighten the adjustment screw on the opposite side by an
equal amount which will leave the tension of the adjustment screws unchanged.
Revolve in the counterclockwise direction to loosen and in the clockwise direction to
tighten, but revolve as little as possible.
Note
2): Perform following adjustment after complete above adjustment . Chapter 8.4
"Adjustment of Compensation Systematic Error of Instrument", Chapter 8.2 "Checking
the Optical Axis".
8.3.5
光學求心器之檢驗與校正
Adjustment is required to make the line of sight of the optical plummet telescope coincide
with the vertical axis ( otherwise the vertical axis will not be in the true vertical above the
reference point when the instrument is optically plumbed).
z
檢驗
c
Coincide the center mark and the point.(See Chapter 2 PREPARATION FOR
MEASUREMENT".)
d
Rotate the instrument 180
°
or 200g around the vertical axis and check the center
mark.
If the point is properly centered in the center mark, adjustment is not required.
Otherwise, adjust in the following manner.
z
校正
c
Take off the adjustment section cover of the optical plummet telescope eyepiece. This
will expose four capstan adjustment screws which should be adjusted with the
accessory adjusting pin to shift the center mark to the point. However, correct only
one-half of the displacement in this manner.
d
Use the leveling screws and coincide the point and center mark.
e
Rotate the instrument 180
°
or 200g around the vertical axis once more and check the
center mark. If it is coincided to the point, then further adjustment is not required.
Otherwise, repeat the adjustment.
Note:
First, loosen the capstan adjustment screw on the side to which the center mark must
be moved. Then tighten the adjustment screw on the opposite side by an equal amount
which will leave the tension of the adjustment screws unchanged.
Revolve in the counterclockwise direction to loosen and in the clockwise direction to
tighten, but revolve as little as possible.
Capstan
adjustment
screws
Capstan adjustment screws
Eyepiece
1/2 of displacement
Plumment telescope
Summary of Contents for GTS-710 Series
Page 1: ...GTS 710 GTS 710 GTS 711 GTS 712 GTS 713...
Page 9: ...1 NOMENCLATURE AND FUNCTIONS 1 9 1 1 1 BT 30Q Lower horizontal clamp Point guide type only 4A...
Page 76: ...11 CORRECTION FOR REFRACTION AND EARTH CURVATURE 11 68 Temprerature C Temprerature F...
Page 77: ...11 CORRECTION FOR REFRACTION AND EARTH CURVATURE 11 69 Temprerature F...
