Olympus BX51 Manual de instruções - Página 23

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Fig. 28

Fig. 29

10. Centering the rotatable stage (Figs. 28 & 29)

(1) Place the specimen.

(2) Focus on the specimen and look for an easily recognizable detail ³

in the field. Move this detail in the center of the eyepiece cross lines.

(3) When the stage is rotated, the detail moves in circle |. Manipulate

the two stage centering knobs ƒ to coincide the imaginary center of

the circle | circumscribed by the detail with the intersection of the

eyepiece cross lines. Depending on the degree of the stage

decentration, this will move the specimen detail in the opposite direc-

tion, away from the cross line center.

(4) Moving the specimen only, move a new specimen detail into the

cross line center.

}Repeat steps (3) and (4) several times until the center of the stage

rotation is in the center of the cross lines, i.e., when rotating the stage, the

specimen detail stays in the center of the cross lines.

(5) Clamp the stage with the stage rotation clamping knob.

11. This concludes centering of the optical axis for the 20X or 10X objective,

which will act as the reference objective. Now, center the other objectives

with the centerable nosepiece by engaging the objectives into the light

path one after another.