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3.3
Focussing the Camera on the Aperture
If the OptoSplit III aperture is not in sharp focus, then adjust the fine
focus on the camera as follows:
1.
Set a convenient sized aperture using the input
aperture levers so the edges of the aperture are within
the field of view. Block one light path by fitting the
shutter plate provided into the one of the Aux mount
positions.
2.
Slacken the two hex screws that retain the output
rotating ring to allow the camera to turn in the
C-mount.
3.
Slightly loosen the single hex screw, which locks the
focussing ring.
4.
Rotate the focussing ring between the camera and
the OptoSplit III whilst holding both in position and
until the aperture comes sharply into focus.
5.
The camera rotating ring should be locked off with
the camera chip orientated precisely in line with the
OptoSplit III, as shown in the figure in the previous
section.
V1
V3
H3
V2
H2
Hex screws
Split control
Focussing ring
Output
rotating
ring
Aperture levers