Topic: NOAA 20 VIIRS Lunar Calibration Roll Maneuver Scheduled for June 1, 2020
Date/Time Issued: June 1, 2020 1340Z
Product(s) or Data Impacted: All NOAA 20 Sensor Data
Date/Time of Initial Impact: June 1, 2020 23:31:45Z
Date/Time of Expected End: June 2, 2020 00:27:45Z
Length of Outage: See Details.
Details/Specifics of change: On June 1, 2020, NOAA-20 will perform a spacecraft attitude maneuver for the VIIRS lunar calibration, with a roll of -1.46 degrees centered at 23:54:45Z. 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 be placed in a contamination safe mode. The timeline of events for this maneuver is provided below.
The following observatory systems will be impacted on 2020 June 1:
23:31:45Z – 00:27:45Z CERES will be in Contam-Safe and Standby, science data will not be available
23:51:13Z – 23:58:17Z VIIRS encoder offset and gain will be set for Moon observation
23:51:45Z – 23:57:45Z 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 and 301-817-3880
Web Site(s) for applicable information: N/A

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