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NOUS72 KNES 281948
ADMNES
*SUBJECT: ADMINISTRATIVE: SUOMI-NPP LUNAR ROLL MANEUVER SCHEDULED FOR APRIL 29,
 2015 , ISSUED: APRIL 28, 2015 , 19:35 UTC
*TOPIC:*  S-NPP VIIRS LUNAR ROLL

*DATE/TIME ISSUED:*  APRIL 28, 2015  19:35  UTC

*PRODUCT(S) OR DATA IMPACTED:*  ALL SUOMI-NPP SENSOR DATA

*DATE/TIME OF INITIAL IMPACT:*   APRIL 29, 12:04:27 UTC

*DATE/TIME OF EXPECTED END: *  APRIL 29, 13:06:27 UTC

*LENGTH OF OUTAGE: * SEE DETAILS.

*DETAILS/SPECIFICS OF CHANGE:*  SUOMI-NPP WILL PERFORM A SPACECRAFT
ATTITUDE MANEUVER, FOR THE VIIRS LUNAR CALIBRATION, WITH A ROLL OF
-4.701 DEGREES CENTERED AT 2015-04-29T12:29:27 UTC.  SCIENCE DATA MAY BE
IMPACTED WHILE THE SPACECRAFT IS POINTING OFF-NADIR DURING THE ATTITUDE
MANEUVER AND THE CERES INSTRUMENT WILL NOT PROVIDE NOMINAL SCIENCE DATA
AS IT WILL PLACED IN A CONTAMINATION SAFE MODE.  THE TIMELINE OF EVENTS
FOR THIS MANEUVER ARE PROVIDED BELOW.

THE FOLLOWING OBSERVATORY SYSTEMS WILL BE AFFECTED ON 2015 APRIL 29:
12:04:27 UTC -- 13:06:27 UTC   CERES WILL BE IN CONTAM-SAFE, SCIENCE
DATA WILL NOT BE AVAILABLE
12:19:27 UTC -- 12:41:27 UTC   HRD WILL BE OFF, DATA FOR DIRECT
BROADCAST USERS WILL BE UNAVAILABLE
12:23:57 UTC -- 12:36:58 UTC   VIIRS ENCODER OFFSET AND GAIN WILL BE SET
FOR MOON OBSERVATION
12:24:27 UTC -- 12:36:27 UTC   S-NPP WILL BE POINTING OFF-NADIR AND
COLLECTED DATA DURING THAT TIME PERIOD MAY BE IMPACTED

CONTACT INFORMATION FOR FURTHER INFORMATION: ESPC OPERATIONS AT
ESPCOPERATIONS@NOAA.GOV  AT 301-817-3880

WEB SITE(S) FOR APPLICABLE INFORMATION: N/A

THIS MESSAGE WAS SENT TO ESPC.NOTIFICATION@NOAA.GOV
. YOU HAVE BEEN SENT THIS AND OTHER
NOTIFICATIONS BECAUSE YOU HAVE OPTED IN TO RECEIVE IT. IF FOR ANY
REASON, YOU WISH TO UNSUBSCRIBE, PLEASE CONTACT ESPC HELP DESK AT
ESPCOPERATIONS@NOAA.GOV  OR (301)
817-3880. PLEASE NOTE: IT MAY TAKE UP TO TWO BUSINESS DAYS TO PROCESS
YOUR UNSUBSCRIBE REQUEST.


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