Space Weather - X class flare (email from S. O'Dall) 07/13/2012
---------------------------------------------------------------

GSFC just issued a revised estimate of the CME arrival time.   The new time is 09:17 on
14 July (revised from 10:20 UT) with an error of +/- 7 hours.
NOAA also revised their simulation with a new arrival time of ~11 UT on 14 July.


Telecom 07/14/2012
-------------------
CE P3 rates were still high and going down only slowly (if at all).
Activated SCS-107 from the ground via CAP 593A at ~196:21:08z - ran nominally.

A tentative plan for observing resumption is to restart at or near the rad-zone exit
~198:05:04z. A dark-current measurement is scheduled for the rad-zone passage and is
strongly desired to be preserved in the replan. There are questions about the requirements
for the Sgr A* observations - SOT-MP will check whether there is a need to reschedule its time.

ACIS is arranging to run a long CTI data collection to begin during the 197:03:30-04:30z pass.

Chandra X-ray Observatory Report (Jul 20, 2012)
-------------------------------------------------

The observing schedule was interrupted (again) due to high radiation
associated with solar activity. The loads were halted at 5:07pm EDT on
Jul 14 through a ground command to execute the SI Safing SCS 107. This
ensured that the accumulated radiation dose for ACIS remained below
the allowed threshold. All spacecraft actions were nominal. Real-time
procedures were executed on Jul 15 to disable SCS-29, which was
enabled during the safing sequence, and to start a collection of ACIS
CCD charge-transfer inefficiency data. A replanned schedule for
resuming science observations was uplinked on Jul 15 with 80.2ks of
science loss.