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Message ID: 322     Entry time: Fri Apr 5 01:07:18 2019
Author: Koji 
Type: Optics 
Category: Characterization 
Subject: OMC(002): transmitted beam images 

There was a concern that the transmission from CM1 has additional fringes. The shape of the transmitted beams from CM1, CM2, and FM2 (main) werecaptured with WinCamD.
Indeed CM1 and CM2 have the fringes, but it does not exist in the main transmission. So it seems that the fringes are associated with the curved mirrors. But how???

Attachment 1: CM1trasns.png  610 kB  Uploaded Fri Apr 5 02:15:49 2019  | Hide | Hide all
CM1trasns.png
Attachment 2: CM2trasns.png  606 kB  Uploaded Fri Apr 5 02:15:49 2019  | Hide | Hide all
CM2trasns.png
Attachment 3: FM2trans2.png  343 kB  Uploaded Fri Apr 5 02:15:49 2019  | Hide | Hide all
FM2trans2.png
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