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Glossary terms about Wobbler

Wobbler

A control found on an electron microscope that sets up an automatic over focus-under focus loop. If the objective lens aperture is not correctly aligned with the electron beam the image will be seen to wobble back and forth under this regime.

4 pages mention Wobbler

Focus/stigmation

 

Frequently asked questions

Step-by-step procedures for using TEMs  

The Eucentric Position

The "wobbler" button can be used as a focus aid where one brings the vibrating split image together into one static image. 

Using the JEM-1010 Transmission Electron Microscope for thin resin sections of biological material

With camera in, at around 50,000 to 80,000 mag undertake the following: Check to see that the objective lens current is correct (page 6 on microscope computer screen).