Hardware
The hardware components of our Fish Otolith Shape Analysis package are:
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a CCD camera with super-fast interface adapter for life preview |
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a personal computer with charming internal and external storage |
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The microscope unit for otolith shape imaging
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There are three basic hardware setup variants that can be offered. They differ in scope of applications that can be covered and in price. Equipment is of highest quality from Olympus Optical Co. |
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Version A |
For obtaining silhouette images of up to 10-15 mm large objects using 1/2" and 2/3" cameras, respectively. Basically, it is a stereo-microscope with a zoom range from 6.3 to 57. The objective is a finest art 1.0x apochromate. Further features are an extra aperture, a stand with integrated light source, and a phototubus including adapters for C-mount cameras. |
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Version B |
For silhouette or transmitted light images of up to 10-15mm large objects using 1/2" and 2/3" cameras, respectively. Same specifications as variant A plus two additional cold light sources, one double swan-neck fiber, and one ring light. |
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Version C |
For silhouette or any other kind of transmitted light images of 15-30mm (1/2" and 2/3" camera) large objects even with pronounced threedimensional topology. The practical depth-of-field limit exceeds 10mm. The same equipment as for variant B but with additional 0.5x optics for the extremely large working distance of 198 mm giving you as much depth-of-field as you can get. The additional optics is mounted in the unique Olympus objective revolver together with the 1.0x apochromate. This is the easiest way combining medium and large working distance capability within one setup. |
LEICA digital camera for otolith shape imaging
The most important features of the LEICA digital cameras are:
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life images to allow on-screen focusing |
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simple user interface for camera operation |
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medium-scale pixel and dynamic resolutions with colour |
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The camera hardware includes the camera itself, a PCI interface card, an up to 6m long connector cable, and the fully TWAIN compatible camera module software. |
There are two options available.
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DC100 |
DC200 |
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CCD sensor Resolution Life s/w preview Image size Max. shutter Software |
1/2 inch 768 x 582 pixel 25 images/sec 0,45 Mbyte 10,0 sec Win 95/98/NT 4.0 |
2/3 inch 1280 x 1024 pixel 9 images/sec 2,61 Mbyte 13,7 sec Win 95/98/NT 4.0 |
Both variants suffice usual requirements for otolith shape imaging. Therefore, besides resolution, the most important advantage of the DC200 over the DC100 is its larger camera format of 2/3": the DC200 image area extensions are 150% of the respective values for the DC100. Thus, larger objects can be imaged with the same optical equipment.
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Personal computer for otolith shape imaging
The computer hardware of our complete solution package should widely be
determined by your needs
and not by arbitrary definitions made at some point in time.
This is also taking into account the rapid development in processors,
disk storage and other computer hardware components.
The following suggested hardware profile description will therefore
be updated occasionally.
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500 MHz Pentium II with 128 MB memory, 9 GB disk, CD-reader, CD-writer |
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Windows NT4.0 or later operating system |
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Pre-installed operating system and utilities such as Paint Shop Pro or Easy-CD-Pro |
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