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Message ID: 56     Entry time: Sat Jan 19 20:47:41 2013
Author: Koji 
Type: Optics 
Category: Characterization 
Subject: Wedge measurement with the autocollimator 

The wedge angle of the prism "A1" was measured with the autocollimator (AC).

The range of the AC is 40 arcmin. This means that the mirror tilt of 40arcmin can be measured with this AC.
This is just barely enough to detect the front side reflection and the back side reflection.

The measured wedge angle of the A1 prism was 0.478 deg.

Ideally a null measurement should be done with a rotation stage.

Attachment 1: autocollimator_wedge_measurement.pdf  551 kB  Uploaded Tue Jan 22 15:56:33 2013  | Hide | Hide all
autocollimator_wedge_measurement.pdf
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