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SOLAR WATCH * Huge X8.2 Flare Sept. 10, 2017! (Updated Daily)
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[quote:Hugh M Eye:MV8xMzgyOTUyXzM3NDk0OTEyXzE0NENDRjU4] [quote:shadasonic:MV8xMzgyOTUyXzM3NDkzNTI3X0RCQzZBOUM5] [quote:curi0sis*SolSis:MV8xMzgyOTUyXzM3NDkxOTEyXzIzOTIzRjZB] [quote:shadasonic:MV8xMzgyOTUyXzM3NDkxMTMwX0YxQjk2RDdD] http://sohowww.nascom.nasa.gov/data/realtime/c3/512/ Got a ?, what causes the shadow of the planet on Lasco C3 [/quote] Hi shada : ) To better grip your ?, d'you mean at our 9 o'clock, between the planet and Sol? just sort of a bit below the horizontal 'flash line' (for lack of better lexicon of mine) of said planet? ...and no, sorry, I have no friggin clue how to answer your Q! o_Ô [/quote] Yep thats the one solsis.Peace [/quote] Hey, sonic, I believe this describes the shadow image artifact you inquired about. If not, check this page which covers a host of issues and questions about SOHO images- 12. What are those dark areas that I sometimes see in the images ? [b]The dark areas are image processing artifacts and not a sensor problem.[/b] The images on the WWW page are processed by removing a background light model. The background light model is about 99% of the light received by the CCD and consists of instrumental stray light as well as coronal light. The amount of background light varys according to SOHO's orbit. [b]When the model is wrong we subtract off too much light and we see a dark area. Correcting the model always lags the actual data.[/b] We are always using last month's model with today's data. So about two weeks to a month after today we will build the right model for today. The real-time images are a rough cut at the image processing and are intended for planning purposes for the next day's observations and for public outreach. The subtraction is particularly obvious during a spacecraft roll manuvuer when the spacecraft has rolled but our background light model has not rolled. Lots of interesting stuff here: http://lasco-www.nrl.navy.mil/index.php?p=content/faq#Question2 [/quote]
Original Message
Please See Current Events Discussion On Last Page :)
We have just had another huge X flare measuring at a X8.2 originating from sunspot 2673
On September 11, 2017
[
link to legacy-www.swpc.noaa.gov
]
ALL flares recorded ARE Earth facing regardless of where the sunspot is located
-----------
CME FROM X9 HAS ARRIVED!
Issue Time: 2017 Sep 07 2242 UTC
WARNING: Geomagnetic Sudden Impulse expected
Valid From: 2017 Sep 07 2255 UTC
Valid To: 2017 Sep 07 2330 UTC
IP Shock Passage Observed: 2017 Sep 07 2229 UTC
On September 6th we have had 2 X flares! A X2.2 at 09:10 utc & a secend larger flare just a few hours later of X9.3 at 12:02 utc. There is a large widespread Earth directed CME associated with this latest X flare as we can see here
[
link to stereo.gsfc.nasa.gov (secure)
]
[
link to stereo.gsfc.nasa.gov (secure)
]
An update as to the arrival time of this CME will be added once all data has been reviewed.
The X9.3 flare is the 14th largest X flare ever recorded!
On September 4th we had 7 M flares from fast growing sunspot 2673, with at least 1 large dense Earth directed CME. This CME will arrive late in the day on Wednesday September 6th.
There is now a 25% chance for X flares over the next 24hrs & 71% chance for M flares
We have a Long Duration M2.4 Solar Flare starting
01:05 UTC July 14th 2017
There was a full halo CME observed with this solar flare. The associated CME is Earth Directed. See discussion on the last page for all updates!
1,000,000 Views hit on July 3, 2012
A big thanks to all the wonderful contributors of
the GLP Solar Watch thread!
Please See Current Events Discussion On Last Page :)
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