Zeiss Stemi 305 Operating Manual

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Zeiss Stemi 305 Operating Manual Manual pdf 27 page image

Stereo microscope OPERATIONStemi 305 Adjusting the stereo microscope ZEISS01/2015 435063-7044-001 274 OPERATION4.1 Adjusting the stereo microscopeThe stereo microscope has been connected andswitched ON.1. Place specimen (Fig. 18/7) centrally on theglass or plastic plate (Fig. 18/6) and illuminateit (Fig. 18/5).The functionality of the knob for thereflected-light illuminator has beendescribed in Section 4.2 on page 28.2. Set diopter compensation on the adjustableeyepieces (Fig. 18/1) to "0"."0" on white dot (without eyepieceplate). "0" on red dot (with eyepieceplate), see Fig. 19.Check that the eyepieces are insertedinto the tube to their stop.3. Set individual eye distance by shifting theeyepiece tube laterally (Fig. 18/2), until onlyone complete light circle (specimen field) isvisible when looking into the eyepieces withboth eyes.To this effect, a distance of approx.2 cm must be maintained between theeye and the eyepiece.4. Initially, set the zoom (Fig. 18/3) to thesmallest magnification.5. Focus on a small distinct detail in the center ofthe specimen (Fig. 18/4).6. Adjust maximum zoom value (Fig. 18/3). Magnification will probably make the distinct detail appearblurred and no longer in the image center.7. Sharpen the specimen by focusing, then shift the specimen to re-search for the detail and focus"sharply" again (Fig. 18/4).8. Afterwards, reset to the lowest zoom value and correct any image blurring for each eye separately bydiopter compensation on the adjustable eyepieces (not on the focusing knob, Fig. 18/4)(compensation of visual defect).After adjustment of the stereo microscope, the image focus remains unchanged over the entire zoomrange.After change of the observer, repeat steps 3. to 8.Fig. 18 Adjusting the stereo microscopeFig. 19 Adjusting the eyepieces