KERN Optics OBD 127, User Instructions

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OBD-1-BA-e-1510 10
4
Assembly
4.1 Microscope head
First you must loosen the fixing screw on the tube connection point and remove the
black protective cover.
You can then insert the round dovetail bracket on the head into the round dovetail
bracket on the housing and fix it with the fixing screw. When doing this, you should
always make sure that you do not touch the lenses with your bare fingers and that no
dust enters the apertures.
4.2 Objectives
All four objectives are already mounted to the nosepiece. After removing the
protective foil they are ready for use. They are ranged in such a way that if you turn
the nosepiece clockwise, the objective with the next higher magnification appears.
When the objectives need to be dismounted, you should always make sure that you
do not touch the lenses with your bare fingers and that no dust enters the apertures.
For objectives which are marked “OIL”, you must use an immersion oil with the
lowest level of inherent fluorescence.
4.3 Eyepieces
You must always use eyepieces with the same magnification for both eyes. These
are simply placed onto the tube connectors, once you have first removed the plastic
protective caps. There is no way of fixing them. You should always make sure that
you do not touch the lenses with your bare fingers and that no dust enters the
apertures.
4.4 Colour filter
A blue colour filter is already an integral part of the microscopes of the series OBD-1.
It is fitted underneath the field diaphragm. In order to use suitable filters, these can
simply be placed in the ring bracket of the field lens.