TM5-6675-296-14
collimation error.
SIGHT A WELL DEFINED OBJECT WITH THE VERTICAL CROSSLINE. MAKE THE COINCIDENCE
STEP 1.
OF GRADUATION LINES AND RECORD THE SCALE READINGS.
REVERSE THE TELESCOPE POSITION AND SIGHT THE OBJECT. MAKE THE COINCIDENCE OF
STEP 2.
THE GRADUATION LINES AND RECORD THE SCALE READINGS.
THE DIFFERENCE BETWEEN THE TWO READINGS, REDUCED BY 3200 MILS IS TWICE THE
STEP 3.
COLLIMATION ERROR.
STEP 4.
SET THE MICROMETER SCALE AT ONE-HALF THE FIGURE COMPUTED BY STEP 3. MAKE THE
COINCIDENCE OF THE GRADUATION LINES BY TURNING THE HORIZONTAL SLOW-MOTION
SCREW.
STEP 5.
WITH THE TELESCOPE IN THIS POSITION, CENTER THE VERTICAL CROSSLINE ON THE
OBJECT AS FOLLOWS:
A. SLIGHTLY LOOSEN THE TWO CLAMP SCREWS.
B.
TO MOVE THE CROSSLINE TO THE RIGHT, LOOSEN LEFT ADJUSTING SCREW AND
TIGHTEN RIGHT ADJUSTING SCREW BY AN EQUAL DEGREE.
TO MOVE CROSSLINE TO THE LEFT, LOOSEN RIGHT ADJUSTING SCREW AND TIGHTEN
C.
LEFT ADJUSTING SCREW BY AN EQUAL DEGREE.
D. TIGHTEN THE TWO CLAMP SCREWS.
TS 6675-296-14/2-13
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