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 Celestron Optical Microscope Field of View Chart
Answer Celestron Optical Microscope Field of View Chart

The field of view  (FOV) is given for the microscopes at each power. If the FOV is less than 1 millimeter (mm), then the size is given in micrometers (microns, µm – one millimeter equals 1000 microns). The number given is either the diameter of the FOV or its longest dimension. In general, FOV decreases as magnification increases. Higher magnifications also have very shallow depth of focus and smaller working distances too. In short, high magnifications should only be used for very small subjects or portions of subjects.

(Note: these figures are approximate and may differ from the actual instrument.)

As comparisons, here is a table of commonly imaged subjects and their sizes either in mm or µm.
Use this table with the main chart to help you decide which microscope and magnification you need to view your particular subject best.
US Dime18mm
US Forever stamp22x25mm
Small mineral-rock specimen10mm
Jewelry gemstones1-10mm
Printed circuit board component3-5mm
PC board lead0.5mm or 500µm
Human sperm cell5x50µm
Human skin cell100µm
Human egg cell100-200µm
Human red blood cell6-8µm
Amoeba proteus220-740μm
Argentine ant Linepithema humile3mm
Escherichia coli bacterium2.0 x 0.5 μm
Dust mites100-300 µm
Dust mite droppings4-25 µm
Ragweed pollen15-25 µm
Mold spores0.5-20µm



For models 44121 through 44206 magnifications is visual - eyepiece and objective together.
Model Number-NameMagnification and field of view
44121 Microscope Kit

40-80x
3.0-1.5mm

150-300x
800-400µm

300-600x
400-200µm

     
         
44125 Microscope 360

40x
3.8mm

64x
3.5mm

100x
1.5mm

160x
1.4mm

400x
375µm

640x
350µm

  
44102 Laboratory

40x
4.4mm

100x

1.8mm

400x

440µm

     
44104
Advanced 500

40x
4.4mm

50x

3.5mm

100x

1.8mm

125x

1.4mm

400x

440µm

500x

350µm

  
44106 Advanced 1000

40x

4.4mm

100x

1.8mm

400x

440µm

1000x

180µm

    
44108
Professional 1500

40x
4.4mm

60x
2.9mm

100x

1.8mm

150x
1.2mm

400x

440µm

600x
290µm

1000x

180µm

1500x

120µm

44202
Advanced Stereo

20x
9.8mm

40x

4.9mm

      
44206
Professional Stereo

10.5x
20mm

68x
3.0mm

      
 


Article Details
Article ID: 2687
Created On: Dec 12 2012 09:24 AM

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