2
Installation Guide
Before using the Optosplit II image splitter you will first need to install
the appropriate set of filters and mirror for your application into the
Cairn Filter Cube. Instructions for these procedures are in sections 2.1
and 2.2. Always take extreme care when changing or adjusting the
filter and mirror sets to avoid damage or soiling. If you purchased your
Optosplit II with a full filter set pre-installed then you may wish to go to
section 2.4. as the following may not be pertenant.
2 .1 Installing Filters into the Cairn Filter Cube
The Cairn Filter Cube has spaces for
two 25mm filters. These are held in
place by locking rings which can be
removed using the tool provided. To
fit a filter, remove the locking ring
and place the filter orientated so that
the arrow points into the Cairn Filter
Cube and towards the light path.
Then simply replace and tighten the
locking ring.
In most applications the dichroic beamsplitter will have longpass char-
acteristics, so the longer wavelength of the two filters should be
located in the straight through filter position, and the shorter wave-
length filter in the second position. (Please refer to the technical sum-
mary in section 4 for details of the light path.)
CAIRN
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CAIRN
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CAIRN
www.ca
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uk
Turn the locking
ring anticlockwise
to remove it.
Carefully place
the filter inside
the recess.
Replace the locking
ring and rotate it
clockwise to secure.
The arrow should be orientated
into the filter cube and towards
the light path.
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