Observation 111558: NOAA 15 (25338)


#1

Regarding Observation 111558

Err? What happened to the NOAA 15 sensor? This picture on the left has big bars in it. Never seen it before…

Anyone?


#2

That’s interesting… not sure what it is…

It is also more visible in observation 111262


#3

It’s even worse today http://atomus.eu/wximg/obs/4751 && https://network.satnogs.org/observations/112101/


#4

Ouch. This seems to be serious…


#5

Indeed, all the latest observations of NOAA 15 have this issue.

From https://en.wikipedia.org/wiki/NOAA-15, its mission was to last at least for two years. Fortunately it worked (and still does) for more years, in one month it will be 20 years from its launch (1998-05-13).

According to N9XTN it could be an issue with AVHRR or data processor.

Maybe we will have more details from NOAASatellites the next days.


#6

Checked POES today (http://www.ospo.noaa.gov/Operations/POES/status.html) and there were no updates on NOAA15 sensors recently.

Also: http://atomus.eu/wximg/obs/4753 vs https://network.satnogs.org/observations/112103/ - seems like wxtoimg reads channel A and APT flowgraph have some troubles decoding.

Interesting.


#7

Could also be the scan motor is going out? Or maybe its the same thing that was said to have the image degrading from a “motor current surge”.

And I hope they say what is going on if they even know what the actual problem is xD.

This is a time when I would wish that the Beacon had telemetry we could decode on it.


#8

We have official info for the incident:
http://www.ssd.noaa.gov/PS/SATS/SPBULL/MSG1031924.01.txt

in short:

The N15 AVHRR global imaging became corrupted on April 12 at ~0000 UTC
due to sync issues. This may be caused by erratic scan motor current
due to loss of lubricant. The problem appears to have corrected itself, as
the global image is no longer corrupted. The issue is still under
investigation.

[details=Click here for the whole text]Subject: Product Outage/Anomaly: NOAA-15 AVHRR Global Image Outage
This is a multi-part message in MIME format.

–Boundary_(ID_bmQlmrHQof+kRl+mrBMZog)
Content-type: text/plain; charset=windows-1252; format=flowed
Content-transfer-encoding: 7BIT

*Topic:*NOAA-15 AVHRR Global Image Outage

*Date/Time Issued:*April 13, 2018 1922 UTC

*Product(s) or Data Impacted:*AVHRR Imaging Products

*Date/Time of Initial Impact:*April 12, 2018 0000 UTC

*Impacts on Users and Significance:*AVHRR imaging products have been
impacted.

*Date/Time of Expected End:*April 13, 2018 1130 UTC

Length of Outage:~36 Hours

Details/Specifics of Change:

The N15 AVHRR global imaging became corrupted on April 12 at ~0000 UTC
due to sync issues. This may be caused by erratic scan motor current
due
to loss of lubricant. The problem appears to have corrected itself, as
the global image is no longer corrupted. The issue is still under
investigation.

*Contact Information for Further Information:*ESPC Operations at
ESPCOperations@noaa.gov mailto:ESPCOperations@noaa.govat 301-817-3880
tel:(301)%20817-3880__and/or other contacts as necessary

*Web Site(s) for applicable information:*N/A

This message was sent to ESPC.Notification@noaa.gov
mailto: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 mailto:ESPCOperations@noaa.govor (301)
817-3880 tel:(301)%20817-3880. Please note: it make take up
to two
business days to process your unsubscribe request.

–Boundary_(ID_bmQlmrHQof+kRl+mrBMZog)
Content-type: text/html; charset=windows-1252
Content-transfer-encoding: 8BIT


Topic: style="font-size: 12.0pt;line-height:115%;font-family:"Times New Roman","serif";mso-fareast-font-family: "Times New Roman";color:#222222">NOAA-15 AVHRR Global Image Outage

Date/Time Issued:

style="font-size: 12.0pt;line-height:115%;font-family:"Times New Roman","serif";mso-fareast-font-family: "Times New Roman";color:#222222">April 13, 2018 1922 UTC

Product(s) or Data Impacted: AVHRR Imaging Products

Date/Time of Initial Impact: April 12, 2018 0000 UTC

Impacts on Users and Significance: AVHRR imaging products have been impacted.

Date/Time of Expected End: style="font-size: 12.0pt;line-height:115%;font-family:"Times New Roman","serif";mso-fareast-font-family: "Times New Roman";color:#222222">April 13, 2018 1130 UTC

Length of Outage: style="font-size: 12.0pt;line-height:115%;font-family:"Times New Roman","serif";mso-fareast-font-family: "Times New Roman";color:#222222">~36 Hours

Details/Specifics of Change:

The N15 AVHRR global imaging became corrupted on April 12 at ~0000 UTC due to sync issues. This may be caused by erratic scan motor current due to loss of lubricant. The problem appears to have corrected itself, as the global image is no longer corrupted. The issue is still under investigation.

Contact Information for Further Information: Operations at ESPCOperations@noaa.gov at 301-817-3880 and/or other contacts as necessary

Web Site(s) for applicable information: N/A

This message was sent to ESPC.Notification@noaa.gov. 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. note: it make take up to two business days to process your unsubscribe request.





–Boundary_(ID_bmQlmrHQof+kRl+mrBMZog)–

[/details]


#9

Thank you @fredy for the information!


#10

So my guess was sort of correct. :smiley:


#11

Problem seems to be intermittent. I might try and see if it’s connected to anything else like exposure to the sun or stuff. (Like tempsture)


#12

https://network.satnogs.org/observations/116546/

Yep still messing up now and then can be seen even in my junk of a image.