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20070318 report
CW/CCW inclinometry
Inclinometry was performed as follows:
Datasets El Dirn HST mean leg temperatures Humidity
start start middle end %
( 20070304 89 cw ~07:30 - - - - )
20070304 89 ccw ~10:00 - - - -
20070318 89 cw ~07:00 - - - -
20070318 89 ccw ~09:30 - - - -
Data is recorded from the 3 active inclinometers only:
there is no strain gauge data, for instance.
- The temperature trace from Ch6 (LT) seems more normal gaian -
see JCMT fault
[20070306.001].
-
The differences between the (CW) model derived from these new data
and the previous model of 04 Mar
are shown below :
Click for better image
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- The noise in Ch2 remains high (1" rms)
- The 3 components of the model are shown in an unusual order
so that the distinct if small structures in the F1 & F2 difference plots
can be clearly seen.
- The rms scatter in the differences in (F1,F2,F3) are
(0.32", 0.20", 0.86")
cf. (0.39", 0.28", 0.84")
previously.
-
The difference between the CW and CCW models is shown below:
is of the smaller amplitude type as seen
last time.
The CW-CCW data were used to generate
a hybrid track model,
installed at HST 23:15 on 18 Mar 2007.
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