Topic: NOAA 20 VIIRS Lunar Calibration Roll Maneuver Scheduled for May 14, 2019
Date/Time Issued: May 13, 2019 1616Z
Product(s) or Data Impacted: All NOAA 20 Sensor Data
Date/Time of Initial Impact: May 14, 2019 21:42:33Z
Date/Time of Expected End: May 14, 2019 22:44:33Z
Length of Outage: See Details.
Details/Specifics of change: On May 14, 2019, NOAA-20 will perform a spacecraft attitude maneuver for the VIIRS Lunar Calibration, with a roll of -2.67 degrees centered at 22:07:33Z. 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 2019 May 14:
21:42:33Z M-bM-^@M-^S 22:44:33Z CERES will be in Contam-Safe and Standby, science data will not be available
22:02:00Z M-bM-^@M-^S 22:15:06Z VIIRS encoder offset and gain will be set for Moon observation
22:02:33Z M-bM-^@M-^S 22:14:33Z NOAA-20 will be pointing off-nadir, collected data may be impacted and not disseminated

Contact Information for Further Information: ESPC Operations at ESPCOperations@noaa.gov at 301-817-3880
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