From: ESPCOperations <ESPCoperations@noaa.gov>
Subject: Administrative: Suomi-NPP Lunar Roll Maneuver scheduled for April 29, 2015 , Issued: April 28, 2015 , 19:35 UTC
Date: Tue, 28 Apr 2015 15:38:26 -0400
To: _NESDIS OSDPD ESPC OUTAGE Notification <ESPC.Notification@noaa.gov>
Message Header
Undecoded Message
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