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old_frankland
professor emeritus
Reged: 03/28/05
Posts: 512
Loc: San Francisco Bay Area
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Compared to white light images from earlier today, the 27th, the spot group has broken down quite a bit. Shot very late after noon through thin clouds with 4 inch ED refractor and Herschel wedge, DMK21
http://www.lafterhall.com/dmk_sv102ed_sunspot_27oct09_001.jpg
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Cheers,
Jim
Livermore CA
http://www.lafterhall.com/astro.html
3" APO, 4" ED refractor, 9" SCT, GM8
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marktownley
Carpal Tunnel
Reged: 08/19/08
Posts: 2256
Loc: West Midlands, UK
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Nice shot Jim!
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mbucky
professor emeritus
Reged: 10/21/07
Posts: 642
Loc: San Diego
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great report and image, jim.
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Michael Buxton
Lunt 75F BF1200
Takahashi TSA 102
DMK 21AU04 CCD
Orion Atlas EQ
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darkstar528
Postmaster
Reged: 03/06/07
Posts: 6780
Loc: Hodgenville, Kentucky, USA
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Great shot!!!!!!!!!!!
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Blue skies,
Stephen "Darkstar" Ames
PST(#96038), VIXEN 8-24mm,CEMAX 2x Barlow, Thousand Oaks White Light Filter and a Meade Elec EP
CFI, CFII, MEI, working on EIEIO!
BAA Member
My solar site:
http://seemysunspot.com
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David Knisely
Postmaster
Reged: 04/19/04
Posts: 8273
Loc: Beatrice, Nebraska
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It is somewhat more broken than previous days, but I wouldn't exactly call it "breaking down". I see what looks like a partial light bridge developing in the main leading sunspot cluster, but the entire group still looks pretty active with lots of spots. When the back clusters start to fade and vanish, then the entire group is starting its decline and decay, so from the looks of things, the group isn't dying just yet. Keep up the great imaging and clear skies to you.
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David W. Knisely
Hyde Memorial Observatory
http://www.hydeobservatory.info
Prairie Astronomy Club
http://www.prairieastronomyclub.org
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astrovale
member
Reged: 02/19/06
Posts: 64
Loc: Rimini, Italy
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Great shot Jim!
I had the same impression today: 11029 is decreasing in size and activity and it is visible both in Halpha and white light. I took some shots but the seeing wasn't very good and the effects were more noticeable in white light of course  No granulation images today!
Ciao
Luca
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www.amun-ra.org
Solar Imaging Website
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old_frankland
professor emeritus
Reged: 03/28/05
Posts: 512
Loc: San Francisco Bay Area
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Pete and David
I was comparing my views late yesterday afternoon (PDT) with Pete's most excellent shot from earlier in the day.
http://www.digitalsky.org.uk/solar/2009/2009-10-27_11-48-47_Green.jpg
My visual views and image suggested to me the back cluster was breaking down and some of the penumbra in the main spot had receeded. I did still note a partial light bridge in the main spot....but seeing was not good, so that was questionable from my vantage point.
Very exciting, all the same, to be observing activity on the sun!
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Cheers,
Jim
Livermore CA
http://www.lafterhall.com/astro.html
3" APO, 4" ED refractor, 9" SCT, GM8
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pjr200
Carpal Tunnel
Reged: 08/29/07
Posts: 2406
Loc: Staffordshire, UK
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Great image Jim and a very informative discussion about the progress of the AR.
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Best regards
Paul Robertson
My Gallery
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old_frankland
professor emeritus
Reged: 03/28/05
Posts: 512
Loc: San Francisco Bay Area
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Quote:
It is somewhat more broken than previous days, but I wouldn't exactly call it "breaking down". I see what looks like a partial light bridge developing in the main leading sunspot cluster, but the entire group still looks pretty active with lots of spots. When the back clusters start to fade and vanish, then the entire group is starting its decline and decay, so from the looks of things, the group isn't dying just yet. Keep up the great imaging and clear skies to you.
Hi David
I was looking at some images by Harald Paleske and came upon this image that well displays the dynamics of a sunspot over a relatively short period of time - half a rotation, I believe. My nieve interpretation of the changes I observed in 11029 were way off the mark. Most informative.
http://www.unigraph.de/images/Digitalaufnahmen2007/eventwl20070446/sf20070426zus.jpg
Thanks for the input, David.
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Cheers,
Jim
Livermore CA
http://www.lafterhall.com/astro.html
3" APO, 4" ED refractor, 9" SCT, GM8
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