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This is the 2nd setup using the 3 meter steel bar next to the wooden top aspect setup. The steel bar is about 2 foot lower and at about 5 O'clock looking at the CCD sections. both ends of the steel bar rest on 25 Kg concrete slabs and are secured with multiple  cords.

    


These are readings from closely matched images from the steel and woooden bar. As the wooden bar is 2 meters and the steel bar 3 meters the steel bar was corrected down by 60 %.


2nd setup   3 meter steel                                         1st setup 2 meter wood

Day 07   time       X          Y      Corr X   Corr Y        Day 07 time    X         Y


21-Mar    1331    2001    259    1200.6    155.4        m21    1305    984    190
21-Mar    1919    2096    253    1257.6    151.8        m21    1917    983    196
22-Mar    757      1935    191    1161       114.6        m22    755      997    195
23-Mar                0    0                   
24-Mar                0    0                   
25-Mar    1158    1773    146    1063.8    87.6         m25    1156    1010    335
26-Mar    1128    1839    193    1103.4    115.8        m26    1125    981    349
27-Mar    820     1762    192    1057.2    115.2         m27    819      990    356
28-Mar    700     1743    179    1045.8    107.4         m28    659     994    406
28-Mar    1733    1743    247    1045.8    148.2        m28    1731    996    421
29-Mar    928     1721    231    1032.6    138.6         m29    924     1014    403
30-Mar    812     1679    260    1007.4    156            m30    810     1030    405

Below is a graph of the steel and woode3n bar data with the steel bar corrected. this is just an early study and i;m trying to get better resolution with the steel setup but am having difficulty getting the center of the spot on the CCD. the width and length of the data plots is consistent however there is a peculair shift of orientation  of the 2 plots. the reason why is not yet figured out. Pink is the wooden and blue the steel data.






Below is a partial image of one spot used for analysis. Admittedly not the best way to go as measuring from an interference pattern is not my idea of accuracy. but here it is and its preliminary data.
the measuring spot is the red dot in the center of a ring in the upper right section. this ring appeared in all the ijmages and was used.