Subject: NOAA-18, HIRS Instrument , Tests to Stabilize Lens Motion, *Topic*: Send commands in an attempt to stabilize the lens motion *Date/Time(UTC) Message Issued:* 08 September 2006 17:40 UTC *Satellite(s) Involved:* NOAA-18 *Instrument(s) Involved:* HIRS *Product(s) Involved/Affected:* All products using HIRS instrument on NOAA-18 *Date/Time(UTC) of Initial Implementation:* d11 September 2006 at 17:21 UTC *Details/Specifics of Change:* Command the mirror to the Internal Warm Target (IWT) position. Command filter housing heater on. Commands will be issued during the period 17:21 UTC thru 17:36 UTC on 11 September 2006. Purpose is to stabilize the HIRS lens on NOAA-18. The instrument data will be monitored for at least 48 hours in this configuration. *Contact Person(s) Name/Email/Phone Number for Questions:* Emily Harrod Physical Scientist 301-457-5247 ext 117 emily.harrod@noaa.gov Cecil A. Paris,PMP Physical Scientist 301-457-5247 ext 129 cecil.paris@noaa.gov *Web site(s) that contain other relevant information (where applicable):* http://www.osdpd.noaa.gov/PSB/PPP/PPP.html - History of level 1B notices http://www.ssd.noaa.gov/PS/SATS/messages.html - All user notices http://www.oso.noaa.gov/poesstatus/ - SOCC polar satellites status http://www.oso.noaa.gov/daily-news/index.htm - SOCC morning reports -- ******************************************* * * Emily D. Harrod * NOAA/NESDIS/OSDPD/IPD * Product Systems Branch * Pre-Product Processing Group * E/SP13, Federal Building #4, room 0318 * 5200 Auth Road * Suitland, Maryland 20746-4304 * USA * voice 301-457-5247 ext 117 * fax 301-457-5199 * email Emily.Harrod@noaa.gov * *******************************************