Topic: NOAA 21 VIIRS Lunar Calibration Roll Maneuver Scheduled for December 22, 2023
Date/Time Issued: December 19, 2023 1610Z
Product(s) or Data Impacted: All NOAA 21 Sensor Data
Date/Time of Initial Impact: December 22, 2023 17:44:53Z
Date/Time of Expected End: December 22, 2023 18:14:28Z
Length of Outage: See Details.
Details/Specifics of change: On December 22, 2023, NOAA-21 will perform a spacecraft attitude maneuver for the VIIRS Lunar Calibration, with a roll of -8.05 degrees centered at 17:59:56Z. Science data may be impacted while the spacecraft is pointing off-nadir during the attitude maneuver. The timeline of events for this maneuver are provided below.
The following observatory systems will be affected on 2023 December 22:
17:45:23Z – 18:14:28Z VIIRS encoder offset and gain will be set for Moon observation
17:45:56Z – 18:13:56Z NOAA-21 will be pointing off-nadir, collected data may be impacted and not disseminated
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