Centration Of Objective Lens Aperture; Centration Of Spectrometer Aperture - LEO 912 OMEGA Brief Manual

Microscope Operation
1.7
1.8
8
•
Activate function ADJUST AIS LOWER and center AIS aperture with
encoders X, Y in the field ILLUMINATION.
•
Switch to DIFF mode and focus the diffraction spot with encoder
OBJECTIVE
in the field FOCUS.
•
Activate function ADJUST STIG CORR and correct astigmatism with
encoders X, Y in the field ILLUMINATION.
– The diffraction spot may move by the astigmatism correction. If the spot is
outside of the objective aperture, continue with the next step first and then
repeat this one.
•
Activate function ADJUST TILT CORR and shift diffraction spot to the
index
point (Center of the objective lens aperture) with encoders X and Y in the
field ILLUMINATION.
•
Switch to IMAGE mode.
•
Adjust the AIS system at 31.500x, 16.000x and 8.000x in the same way.
•
Check the complete adjustment and optimize it.

Centration of objective lens aperture

•
Select diffraction mode with button IMAGE/DIFF in the field IMAGE.
•
Adjust the brightness of the diffraction image with the buttons
ILL APERTURE ∆ ∇.
•
Select a camera length of CL = 580 mm with the buttons
MAGNIFICATION ∆ ∇.
•
Center the diffraction spot to the index point with X and Y in the field
IMAGE.
•
Focus the diffraction image with encoder OBJECTIVE in the field FOCUS.
•
Insert the desired objective aperture and center it to the diffraction spot.
•
Switch back to IMAGE mode with button IMAGE/DIFF in the field IMAGE.

Centration of spectrometer aperture

•
Insert entrance aperture (1st clickstop) and center it with the aperture
drives to the large screen.
Centration of objective lens aperture
LEO 912 OMEGA