Transcript Visible_Flexure_Camera_Analysis.ppt

Visible Flexure Camera
Analysis
J. Kent Wallace
March 14, 2006
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Flexure Movie
(view in presentation in ‘Slide Show’ mode)
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Analysis
• There exist a 2x2 matrix, M, that transforms the
measured flexure camera coordinates, Fm, to PHARO
coordinates, Pm:
Pm  Fm  M
• This can be inverted:
1
M  ( Fm  Fm )  Fm  Pm
T
T
• The error in the fit for the data is:
E  Pm  Fm  M
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Flexure Data Fit
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Summary
• Error in estimating P from F is ~0.15 pixel
(rms) or ~3.75 mas.
– PHARO camera and flexure camera not well
sync’ed to each other. Data sampling could be
off by as much as 10 seconds. Likely error is
smaller by some amount.
• Next step is to try and close the loop on
the flexure camera.
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