Bruker HYPERION - Realigning the GIR Objective

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HYPERION User Manual Bruker Optik GmbH
Operation 4
In case you see an image as shown in fig. 4.8a, the GIR objective is attached at revolv-
ing nosepiece in an exactly aligned manner. In this case, no realignment is required. If,
however, you see an image of a mirror edge which is not vertically aligned (e.g. in
fig. 4.8b), you need to readjust the GIR objective mirror optics as described in the follow-
ing section.
4.15.6 Realigning the GIR objective
Required tools
• flat-tip screwdriver
• Allen wrench (wrench size 2 mm)
Procedure
1. Remove the GIR objective from the revolving nosepiece and turn it upside down.
2. Remove the bottom part of the objective housing by loosening the two slotted-head
screws (VIS-GIR knobs) at the long side of the objective and the two slotted-head
screws at the bottom side of the objective. See fig. 4.9.
Figure 4.8: a) GIR mode- Image of a vertically
aligned mirror edge - alignment of
the mirror optics is OK
Figure 4.8: b) GIR mode - mirror edge is not
vertically aligned - alignment of
the mirror optics is not OK
Figure 4.9: Removing the bottom part of the objective housing
Slotted-head screws at the long
side of the GIR objective
Note: These two slotted-head
screws have two functions:
1. fastening screws for the bot-
tom part of the objective hous-
ing and 2. knobs for setting the
VIS mode or GIR mode
Slotted-head screws
at the bottom side of
the GIR objective