Olympus BHTU Manual de instrucciones - Página 17

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1. Troubleshooting Guide

Fig. 22

4. Focusing Procedure

Use the field of view eyepieces for focusing on the film plane. Each field of view eyepiece

has a focusing front lens and a relide with 4 frames, each frame indicating the area covered

by a specific power N FK photo eyepeice. (Fig. 22)

The number at each frame indicates the

magnification of the photo eyepiece. The

image in the field of view eyepiece and the

image on the film plane are in focus at the

same time. Several type field of view eye-

pieces are available, according to the film

size employed.

Field of view eyepiece

35WHK10X

PWHK10X

4X5WHK10X

MHWHK10X

35mm Back

3%" x 4%"

4" x 5"

16mm Bolex

Attachment camera

Polaroid

Sheet Film or

camera

Back

Polaroid Film

120 Roll Film

Holder

1) Select the field of view eyepiece matching the camera bSlck in use and insert it into the

right eyepiece tube of the trinocular tube, aligning locating groove and locating pin.

2) While looking through the field of view eyepiece, rotate the eyepiece front lens in screw

mount to focus on the double cross lines in the field. For sharp focusing with objectives

4X or lower, the focusing magnifier FT is recommended on account of their considerable

depth of focus.

3) Bring the specimen detail to be photographed within the frame corresponding to the

power of the NF K eyepiece in use and focus on the specimen with the microscope fine

adjustment knobs. Make sure the light path selector knob on the observation tube is

either on the white (V)

yellowijreen (eVI band.

4) It is recommended to tighten the tension adjustment ring considerably to prevent the

stage from dropping during long exposures.