Operation of the Optosplit
3.2 Centering the Optosplit images on the camera
When the Optosplit is initially installed, or if the filter block goes out of alignment, the Optosplit
images can show significant aberrations, or in extreme cases only a single image may be observable for
any setting of the separation control. In these cases the following procedure will enable the filter set to be
reconfigured. Control locations are shown in figure 7.
1. Define a small area using the Optosplit aperture and centre the shorter wavelength image
horizontally using the separation control (blue arrow, fig.7).
Note: In a correctly configured Optosplit both images will be superimposed with
the short wavelength image centred.
2. Centre the same image vertically using the vertical offset adjustment on the top-plate of the
Optosplit (Pre 1).
3. The short wavelength image is now correctly positioned.
4. To centre the long wavelength pathway, we superimpose the longer wavelength image on the
short wavelength image we have just centred. This is done using the knurled screw Pre 3 and hex
screw Pre 4.
5. First we centre the image horizontally by small adjustments of Pre 3. Once the image is exactly
superimposed on the long wavelength image in the centre of the field of view, we can adjust the
vetical position of this image.
Note: If the images are superimposed off-centre then image aberrations can
result, so ensure the short wavelength image is correctly centred before
positioning the long wavelength image.
6. Adjust vertical position using the recessed hex screw, Pre 4.
7. Recheck image horizontal alignment & repeat steps 5 & 6 if required.
Page 9
Summary of Contents for Optosplit II
Page 1: ...Optosplit II Image Splitter User Guide v3 1 ...
Page 2: ......
Page 4: ......
Page 7: ...Table of Contents Page v ...
Page 8: ......
Page 10: ......
Page 18: ......
Page 20: ......
Page 22: ......