The main image in post was decoded with WXtoIMG as both noaa-apt and SatDump fail to synchronize it correctly.
Unprocessed image from noaa-apt:
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Waterfall:
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There you can see some breaks, the noticeable horizontal lines.
Which sounds like so (note: the waterfall shown above isn’t from the same time as audio):
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And the bonus, DSB images:
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Channels 1-20 are left-to-right then bottom.
And also AVHRR scan motor current as of today:
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You should try satdump for the DSB, it can make some nice HIRS composites.
The scan motor current seems to be dropping, maybe it will fix itself again.
Also, The top right of your APT image is very interesting, some of the actual corupted data seems to be getting into the APT
That is from SatDump, I just put it together in JointPics.
In this case there wasn’t anything interesting looking, at least with the pre-set composites. But to be honest, I am not sure how to use that properly. Also what’s with the vertical lines with NOAA-15? When I tried NOAA-19 I got OK results
That’s really strange, I checked my HIRS images from NOAA 15 and I don’t have any vertical lines, was there any nearby interference?
It only works in day, but
ch20, ch20, ch20 + ch8 * 0.1seems to make a nice natural looking colour composite on HIRS. It’s a bit hard to see because of how low res the HIRS is, but it makes the land green and the oceans a dark blue.My HIRS from that pass (low elevation here):
Nope. I also had those lines when I tried before, so I thought it’s something with the satellite. Maybe there is some interference. NOAA-19 uses different frequency for DSB. I’ll have to try with NOAA-18 (and hope it doesn’t cut off again), that should be on same frequency as NOAA-15. But I didn’t notice any interference.
Thanks for that setting. That looks nice.