Topic: NOAA-20 VIIRS Lunar Calibration Roll Maneuver Scheduled for April 15, 2019

Date/Time Issued: April 12, 2019 1645Z

Product(s) or Data Impacted: All NOAA-20 Sensor Data

Date/Time of Initial Impact: April 15, 2019 1535Z

Date/Time of Expected End: April 15, 2019 1631Z

Length of Outage: See Details.

Details/Specifics of change: On April 15, 2019, NOAA-20 will perform a spacecraft attitude maneuver for the VIIRS Lunar Calibration, with a roll of -1.37 degrees centered at 15:58:28 Z. 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:

15:35:28Z - 16:31:28 Z CERES will be in Contam-Safe, science data will not be available
15:54:57Z - 16:01:57 Z VIIRS encoder offset and gain will be set for Moon observation
15:55:28Z - 16:01:28 Z 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.

Web Site(s) for applicable information: See http://www.ssd.noaa.gov/PS/SATS/messages.html for this and other satellite related messages.

This message was sent from ESPC.Notification@noaa.gov. You have been sent this and other notifications because you have opted in to receive it. If for any reason, you wish to unsubscribe, please contact ESPC Help Desk at ESPCOperations@noaa.gov or (301) 817-3880. Please note: it may take up to two business days to process your unsubscribe request.