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SLR-Mail No.2286

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Date:2014-12-12 10:26:18
Sender:&#8221;Luis Manuel Cortina Moncayo&#8221; <lmcortina@roa.es>
Subject:[SLR-Mail] No.2286: 7824 SFEL: Calibration distance issue
Author:Manuel Quijano Macias
Content:Author: Manuel Quijano Macias / SFEL station

Dear colleagues:

San Fernando SLR station (SFEL 7824) uploaded data files since Jun 12 to
Aug 8, 2014 are affected by an error due a wrong measurement in the
distance from the telescope cross axis to the calibration target. The
reported distance was 444 cm while the true one is 451 cm. A +233 ps
biass
should be applied for this period

When trying to fix the error we made a new one affecting the data files
uploaded since Aug 8, because we had not into account the calibration
target angular displacement. So the used distance was 462 cm, but not the
above mentioned 451. In this case the biass to apply must be -367ps.

We have modified paragraph 8.04 in the SFEL log file to clarify this problem.
Since this night, 02/12/2014 00:00:00.00, we´ll apply the new value 451 cm.

We apologize for the inconveniences caused by these errors.

Best regards


==========================================
Manuel Quijano Macias

Real Instituto y Observatorio de la Armada
mquijano@roa.es
C/ Cecilio Pujazón s/n
11.100 San Fernando (SPAIN)
Phone: +34 956 54 54 46

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