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Date: 06 Sep 2006 15:41:08
From: Gerard M Foley
Subject: New Sunspot Cycle?
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Are either of these spots the first of the new cycle?:
http://www.pbase.com/image/66409301
--
Gerry
http://www.pbase.com/gfoley9999/
http://www.wilowud.net/
http://home.columbus.rr.com/gfoley
http://www.fortunecity.com/victorian/pollock/263/egypt/egypt.html
http://foley.foleypages.net/~gerry/
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Date: 06 Sep 2006 13:46:51
From: David Knisely
Subject: Re: New Sunspot Cycle?
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Gerald M. Foley wrote:
> Are either of these spots the first of the new cycle?:
>
> http://www.pbase.com/image/66409301
Nope. They are low-latitude spots with the same polarity orientation as
those from the current solar cycle. What we are looking for is new spot
groups at around 25 or 30 degrees solar latitude that have a polarity
orientation opposite that of those in the current cycle. Once we
clearly see these first higher-latitude spots, the new cycle is about to
begin. Clear skies to you.
--
David W. Knisely KA0CZC@navix.net
Prairie Astronomy Club: http://www.prairieastronomyclub.org
Hyde Memorial Observatory: http://www.hydeobservatory.info/
**********************************************
* Attend the 13th Annual NEBRASKA STAR PARTY *
* July 23-28, 2006, Merritt Reservoir *
* http://www.NebraskaStarParty.org *
**********************************************
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Date: 06 Sep 2006 19:28:15
From: Thomas
Subject: Re: New Sunspot Cycle?
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"David Knisely" <KA0CZC@navix.net > wrote in message
news:3e0cf$44ff1795$471c86be$27520@ALLTEL.NET...
> Gerald M. Foley wrote:
>
>> Are either of these spots the first of the new cycle?:
>>
>> http://www.pbase.com/image/66409301
>
> Nope. They are low-latitude spots with the same polarity orientation as
> those from the current solar cycle. What we are looking for is new spot
> groups at around 25 or 30 degrees solar latitude that have a polarity
> orientation opposite that of those in the current cycle. Once we clearly
> see these first higher-latitude spots, the new cycle is about to begin.
> Clear skies to you.
Wonderful information David. I bet PST sales will blossom.
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Date: 07 Sep 2006 09:04:55
From: Philippe Gautier
Subject: Re: New Sunspot Cycle?
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David Knisely wrote:
> Gerald M. Foley wrote:
>
>> Are either of these spots the first of the new cycle?:
>>
>> http://www.pbase.com/image/66409301
>
>
> Nope. They are low-latitude spots with the same polarity orientation as
> those from the current solar cycle. What we are looking for is new spot
> groups at around 25 or 30 degrees solar latitude that have a polarity
> orientation opposite that of those in the current cycle. Once we
> clearly see these first higher-latitude spots, the new cycle is about to
> begin. Clear skies to you.
Hi,
What about this one?
http://apod.nasa.gov/apod/ap060830.html
Philippe
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Date: 07 Sep 2006 13:24:37
From: David Knisely
Subject: Re: New Sunspot Cycle?
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Philippe Gautier posted:
> What about this one?
>
> http://apod.nasa.gov/apod/ap060830.html
>
> Philippe
The problem with that group is that it was at a very low latitude
(consistent with the remaining spots from the old cycle) and we are
looking for the first spots of the new cycle forming at around 25 to 30
degrees away from the solar equator. There are sunspot groups which do
come up "backwards" (ie: following polarity ends up leading in what is
known as "inverted polarity"), but these happen occasionally during
various times of the sunspot cycle and are not necessarily indicators of
new-cycle spots. The group shown in that image appears to be one of
these inverted polarity (old-cycle) groups, as later on, it developed
some leading polarity (black) out ahead of the trailing polarity spot.
Clear skies to you.
--
David W. Knisely KA0CZC@navix.net
Prairie Astronomy Club: http://www.prairieastronomyclub.org
Hyde Memorial Observatory: http://www.hydeobservatory.info/
**********************************************
* Attend the 13th Annual NEBRASKA STAR PARTY *
* July 23-28, 2006, Merritt Reservoir *
* http://www.NebraskaStarParty.org *
**********************************************
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Date: 08 Sep 2006 09:08:59
From: Philippe Gautier
Subject: Re: New Sunspot Cycle?
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David Knisely wrote:
> Philippe Gautier posted:
>
>> What about this one?
>>
>> http://apod.nasa.gov/apod/ap060830.html
>>
>> Philippe
>
>
> The problem with that group is that it was at a very low latitude
> (consistent with the remaining spots from the old cycle) and we are
> looking for the first spots of the new cycle forming at around 25 to 30
> degrees away from the solar equator. There are sunspot groups which do
> come up "backwards" (ie: following polarity ends up leading in what is
> known as "inverted polarity"), but these happen occasionally during
> various times of the sunspot cycle and are not necessarily indicators of
> new-cycle spots. The group shown in that image appears to be one of
> these inverted polarity (old-cycle) groups, as later on, it developed
> some leading polarity (black) out ahead of the trailing polarity spot.
> Clear skies to you.
David,
Thanks for the explanation
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