This plot shows the offset in x between the expected point
pattern and the observed point pattern (called optical axis by the recipe) derived from the
irdis distortion recipe.  
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The offset of the right beam refers to the right beam product extension with
size 1024x1024 pixel covering the pixel area x=[<b>1025</b>,2048], y=[1,1024] of the raw frame.
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This plot is provisional, as the irdis distortion recipe is not yet fully operational.<br>
2015-04-15: The common stop (INS1.OPTI1.NAME) is ignored.