Subject: (CANCELLED) Administrative: GOES-13 (GOES-East) Stray Light This is a multi-part message in MIME format. --Boundary_(ID_6NKZrOZTXZylbhxKSNaaeg) Content-type: text/plain; charset=windows-1252; format=flowed Content-transfer-encoding: 8BIT *THIS TEST HAS BEEN CANCELLED DUE TO HARDWARE PROBLEMS AT WALLOPS. Topic*: GOES-13 (GOES-East) Stray Light Correction Operations Test is scheduled for February 9, 2012 at 1535 UTC *Date/Time Issued:* February 8, 2012 0012 UTC *Product(s) or Data Impacted:* GOES-13 (GOES-East) Imager in the IR channels, GVAR block 0 *Date/Time of Initial Impact*: February 9, 2012 15:35 UTC *Date/Time of Expected End: *February 10, 2012 15:35 UTC *Length of Outage:* No outage, 24-hour test. *Details/Specifics of Change: * This Eclipse Season GOES ground system is including a new algorithm to correct for contamination for stray light from sun when it is within 20 degrees. Solar contamination saturates the images and renders them useless when it is within 6 degrees of a frame. With this new algorithm NOAA will be able to provide images without any interruption hence a better monitoring of the earth-ocean-atmosphere system. The algorithm will work in real time and within the Sensor Processing System (SPS) resulting in corrected GVAR stream to the users. The stray light correction and minimum sun angle for each line will be included in the GVAR stream in Block-0 so the users can opt not to use any line or frame when too close to the sun. There will be a 24-hour GOES-13 (GOES-East) Stray Light Correction Operations Test scheduled for tomorrow, Thursday, February 9, 2012 at 1535 UTC for users to ingest corrected images and address any issues they may have. For the coming eclipse seasons, beginning on February 15, 2012, the stray light correction will be performed continuously for GOES-13 (GOES-East) avoiding any image cancellations. It will be followed by GOES-15 (GOES-West) during Fall-2012 Eclipse Season. This version of ground software also updates GVAR block 0 with the stray light status including the minimum sun angle to each line and the location of the sun relative to the scan line. The detailed changes are documented in the white paper, “Straylight Correction Status Word in GVAR Block 0 ” which can also be downloaded from the GVAR Download page referenced below. Please check out the new information included in Block-0 which can be utilized to reject any corrected lines too close to sun if products are affected adversely. PLEASE NOTE: During this 24-hour test, SHEMI images within 60 minutes of satellite midnight (4:09, 4:39, 5:09 and 5:39) and 5:45 UTC Full Disk will be positively effected by the new correction algorithm. Contact Information for Further Information: ESPC Operations at ESPCOperations@noaa.gov at 301-817-3880 and/or SPSD.UserServices@noaa.gov for comments. Web Site(s) for applicable information: See http://www.osd.noaa.gov/GVAR_Downloads/documents/SLC_GVAR_White_Paper_V1.doc for White Paper for Visible Calibration Coefficients Update (GVAR block 0) See http://www.osd.noaa.gov/GVAR_Downloads/gvar_downloads.html for more GVAR information. See ftp://ftp.oso.noaa.gov/Public/Goes/StrayLightCorrection_Documents/ for "Poster_Stray_Light_Correction" and additional stray light information. See http://www.ssd.noaa.gov/PS/SATS/messages.html for this and other satellite related messages. See http://www.ospo.noaa.gov/Operations/GOES/schedules.html for full GOES scanning schedules and scan sectors. See http://www.ospo.noaa.gov/Operations/GOES/eclipse.html for full eclipse schedules. This message was sent to 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. --Boundary_(ID_6NKZrOZTXZylbhxKSNaaeg) Content-type: text/html; charset=windows-1252 Content-transfer-encoding: 8BIT THIS TEST HAS BEEN CANCELLED DUE TO HARDWARE PROBLEMS AT WALLOPS.

Topic: GOES-13 (GOES-East) Stray Light Correction Operations Test is scheduled for February 9, 2012 at 1535 UTC

Date/Time Issued: February 8, 2012  0012 UTC

Product(s) or Data Impacted: GOES-13 (GOES-East) Imager in the IR channels, GVAR block 0

Date/Time of Initial Impact: February 9, 2012 15:35 UTC

Date/Time of Expected End: February 10, 2012 15:35 UTC

Length of Outage: No outage, 24-hour test.

Details/Specifics of Change:
This Eclipse Season GOES ground system is including a new algorithm to correct for contamination for stray light from sun when it is within 20 degrees. Solar contamination saturates the images and renders them useless when it is within 6 degrees of a frame. With this new algorithm NOAA will be able to provide images without any interruption hence a better monitoring of the earth-ocean-atmosphere system. The algorithm will work in real time and within the Sensor Processing System (SPS) resulting in corrected GVAR stream to the users. The stray light correction and minimum sun angle for each line will be included in the GVAR stream in Block-0 so the users can opt not to use any line or frame when too close to the sun.

There will be a 24-hour GOES-13 (GOES-East) Stray Light Correction Operations Test scheduled for tomorrow, Thursday, February 9, 2012 at 1535 UTC for users to ingest corrected images and address any issues they may have. For the coming eclipse seasons, beginning on February 15, 2012, the stray light correction will be performed continuously for GOES-13 (GOES-East) avoiding any image cancellations. It will be followed by GOES-15 (GOES-West) during Fall-2012 Eclipse Season.

This version of ground software also updates GVAR block 0 with the stray light status including the minimum sun angle to each line and the location of the sun relative to the scan line. The detailed changes are documented in the white paper, “Straylight Correction Status Word in GVAR Block 0” which can also be downloaded from the GVAR Download page referenced below. Please check out the new information included in Block-0 which can be utilized to reject any corrected lines too close to sun if products are affected adversely.

PLEASE NOTE: During this 24-hour test, SHEMI images within 60 minutes of satellite midnight (4:09, 4:39, 5:09 and 5:39) and 5:45 UTC Full Disk will be positively effected by the new correction algorithm.

Contact Information for Further Information: ESPC Operations at ESPCOperations@noaa.gov at 301-817-3880 and/or SPSD.UserServices@noaa.gov for comments.

Web Site(s) for applicable information:
See http://www.osd.noaa.gov/GVAR_Downloads/documents for White Paper for Visible Calibration Coefficients Update (GVAR block 0)
See http://www.osd.noaa.gov/GVAR_Downloads/gvar_downloads.html See ftp://ftp.oso.noaa.gov/Public/Goes/StrayLightCorrection_Do for "Poster_Stray_Light_Correction" and additional stray light information.
See http://www.ssd.noaa.gov/PS/SATS/messages.html for this and other satellite related messages.
See http://www.ospo.noaa.gov/Operations/GOES/schedules.html for full GOES scanning schedules and scan sectors.
See http://www.ospo.noaa.gov/Operations/GOES/eclipse.html for full eclipse schedules.

This message was sent to 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.

--Boundary_(ID_6NKZrOZTXZylbhxKSNaaeg)--