40m QIL Cryo_Lab CTN SUS_Lab TCS_Lab OMC_Lab CRIME_Lab FEA ENG_Labs OptContFac Mariner WBEEShop
  TCS elog  Not logged in ELOG logo
Message ID: 88     Entry time: Wed Aug 4 09:57:38 2010
Author: Aidan, James 
Type: Computing 
Category: Hartmann sensor 
Subject: RMS measurements with Hartmann sensor 

[INCOMPLETE ENTRY]

We set up the Hartmann sensor and illuminated it with the output from the fiber-coupled SLED placed about 1m away. The whole arrangement was covered with a box to block out ambient light. The exposure time on the Hartmann sensor was adjusted so that the maximum number of counts in a pixel was about 95% of the saturation level.

We recorded a set of 5000 images to file and analyzed them using the Caltech and Adelaide centroiding codes. The results are shown below. Basically, we see the same deviation from ideal improvement that is observed at Adelaide.

Attachment 1: rms_analyze_centroids_aidan.pdf  7 kB  | Hide | Hide all
rms_analyze_centroids_aidan.pdf
Attachment 2: RMS_WonCode.png  17 kB  Uploaded Wed Aug 4 13:43:13 2010  | Hide | Hide all
RMS_WonCode.png
Attachment 3: RMS_WonCodeLessPrism.png  18 kB  Uploaded Wed Aug 4 13:43:24 2010  | Hide | Hide all
RMS_WonCodeLessPrism.png
ELOG V3.1.3-