Topic: NOAA 20 VIIRS Lunar Calibration Roll Maneuver Scheduled for November 23, 2023
Date/Time Issued: November 21, 2023 1506Z
Product(s) or Data Impacted: All NOAA 20 Sensor Data
Date/Time of Initial Impact: November 23, 2023 08:00:12Z
Date/Time of Expected End: November 23, 2023 09:02:12Z
Length of Outage: See Details.
Details/Specifics of change: On November 23, 2023, NOAA-20 will perform a spacecraft attitude maneuver for the VIIRS Lunar Calibration, with a roll of -6.65 degrees centered at 08:25:12Z.
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 are provided below. The following observatory systems will be affected on 2023 November 23rd:
08:00:12Z – 09:02:12Z CERES will be in Contam-Safe and Standby, science data will not be available.
08:19:39Z – 08:32:45Z VIIRS encoder offset and gain will be set for Moon observation.
08:20:12Z – 08:32:12Z 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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