19
during this time replace it from the second
container.
8.3.3. The saltwater prawn under
the microscope
What comes out of the egg is known as a
nauplius larva. Use the pipette (Fig 2, 22a) to put
some of them on a slide for examination. They
will move in the solution using their hair like
limbs. Remove a few daily from the container
for examination under the microscope. If you
do so and save the pictures made with the
MicrOcular you will then have a seamless
record of the prawn‘s lifecycle. You can remove
the upper lid of the prawn bleeding plant and
put the whole thing under the microscope. The
larvae will mature in six to ten weeks depending
on ambient temperature. You will soon have
bred an entire generation of saltwater prawns
that constantly reproduce.
8.3.4. Feeding your saltwater prawns
To keep them alive saltwater prawns must be
fed occasionally. This must be done carefully
as overfeeding causes the water to stagnate
and poison the prawns. Feeding is best down
with dry powdered yeast (Fig 2, 25a). Give them
a little every other day. If the water darkens this
signifies it is stagnating. If so remove the prawns
and put them in a fresh saline solution.
9. MicrOcular setup
NOTE:
The MicrOcular only works
without the Barlow lens sup-
plied. Magnication setting is
changed by using the MicrO-
cular and must be reset by
focussing anew.
Remove the Barlow lens (Fig 6, 3) and eyepiece
currently in use from the eyepiece holder (Fig
6, 5) and replace them with the MicrOcular
(PC-Ocular) (Fig 7, 4) as in illustration 7 in the
holders (Fig 7, 5)
NOTE:
Please do not yet connect Mi-
crOcular and PC. Please go
thr
ough the items below in se-
quence.
10. Installation and usage of the software
10.1. Installing the software
You find the capturing software for Win 7 /
8.1 / 10 on the CD. Double click on the exe file
and follow the instructions in the installation
manager. It is not necessary to install a
specific driver. The camera will be recognized
automatically from suitable Windows operating
systems.
10.2. Capturing images
Connect the camera with your PC. Start the
software „CamLabLite“ and activate the
MikrOkularHD in the camera list of the software.
Switch on the microscope and place a sample
with good contrast on the microscope stage.
Look through the eyepiece and use the lowest
magnification to focus on the sample. Now
insert the camera as described above. Normally
only slight re-focussing is needed to see a sharp
image of your sample in the software preview.
The software preview will always show the full
frame of view. Please note: The camera will
show a smaller field of view as can be seen in
the eyepiece, which is normal. Maybe choose
a different magnification on the microscope to
adjust the field of view of the camera.
You can save images and video by clicking on
the button „Snap“ (single image) or „record“
(Video) respectively. The folder to save files
and the language settings of the software
can be adjusted. Click the button to enter
the options menu. Choose the resolution of
the camera from the „Live“ dropdown menu.
The resolution of the capture will be adjusted
accordingly. The brightness of the image will
be adjusted automatically. For best results
adjust the microscope illumination to maximum
brightness. To adjust the exposure time
individually, remove the tick mark from „Auto
Exposure“ and choose a different exposure time
from “Exposure target“.
DE
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