Realgar - Getchell Mine

 


Still not getting a good beam from the raman filter into the spectrometer.

The pinhole assembly needs alignment. 
There is a collimator only on the side that has the pinhole. 
When the sled is retracted, there is no pinhole or collimator.
It seems that standard operation is to have the pinhole always 
inserted and dilated or contracted as necessary?

The spectrograph's alignment diode laser must be used to thread the beam 
backwards from the spectrograph CCD, through the entrance slit,
and through the pinhole. Additionally there are probably leveling tools
needed to keep the beam height constant throughout the device.
Maybe I can 3d print a pinhole for this purpose.
The current height is about 62mm. Should be 61mm as measured on the
pinhole assembly?

The main 633nm laser beam coming from the microscope also needs 
to thread through same pinhole and hit the entrance slit 
(ideally at the same point the alignment laser emerged from it).

There are many adjusting screws on the motorized pinhole assembly.
The alignment laser beam does not currently match up well with 
the main laser beam path....