Content-Length: 9077 | pFad | http://www.ospo.noaa.gov/data/messages/2022/MSG012163514.html
Topic: NPP VIIRS Lunar Calibration on January 13, 2022
Date/Time Issued: January 12, 2022 1628Z
Product(s) or Data Impacted: All NPP Sensor Data
Date/Time of Initial Impact: January 13, 2022 0401Z
Date/Time of Expected End: January 13, 2022 0503Z
Length of Outage: Approximately 1 hour, 2 minutes.
Details/Specifics of change: On January 13, 2022, S-NPP will perform a
spacecraft attitude maneuver for the VIIRS Lunar Calibration, with a roll of
-5.21 degrees centered at 04:26:00Z. 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 January 13, 2022:
04:01:00Z – 05:03:00Z CERES will
be in Contam-Safe and Standby, science data will not be available
04:16:00Z – 04:38:00Z HRD will be off, data for direct broadcast users will be unavailable
04:20:30Z –
04:33:31Z VIIRS encoder offset and gain
will be set for Moon observation
04:21:00Z – 04:33:00Z S-NPP 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
Fetched URL: http://www.ospo.noaa.gov/data/messages/2022/MSG012163514.html
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