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Re: (meteorobs) ALL: AstroAlert: Very Large Possible Naked-Eye Sunspot Group
Okay, I'm not afraid to show my ignorance, it's the only way to
learn, but what exactly dies VHF DXing refer to? I have a ham license
so I know what DXing is and all that but...
>I know that I said "no more alerts on the Reflectors." But this is
>interesting enough that even those who don't work VHF DX may find it worth
>reading!
>(Again, if you haven't signed up for one of the alerting services and
>you're interested in the auroras, better do so!)
>---------------------------------------------------
>>Return-path: <owner-sun-earth@skypub.com>
>>From: Cary Oler <oler@solar.spacew.com>
>>Subject: AstroAlert: Very Large Possible Naked-Eye Sunspot Group
>>To: sun-earth@skypub.com
>>Date: Tue, 19 Sep 2000 21:50:55 -0600 (MDT)
>>Sender: owner-sun-earth@skypub.com
>>
>> A s t r o A l e r t
>> Sun-Earth Alert
>>
>> Solar Terrestrial Dispatch
>> http://www.spacew.com
>>
>> 19 September 2000
>>
>>* One of the Largest Sunspot Groups so far this Solar Cycle comes into View *
>> * Potential Major Solar Flare Warning *
>>
>>POTENTIAL NAKED-EYE SUNSPOT
>>
>> On 18 September, one of the largest sunspot groups to be observed so far
>>this solar cycle began rotating into view around the eastern limb of the Sun.
>>The enormity of this region was never fully realized until today. This
>>sunspot group currently measures 6.51 BILLION square kilometers in size. That
>>is large enough to map the entire surface area of the Earth within the space
>>occupied by the sunspot complex almost 13 times over! In fact, this sunspot
>>group is so large that people equipped with eye protection may be able to
>>spot the sunspot complex with their naked eyes.
>>
>> DO NOT ATTEMPT TO VIEW THIS SUNSPOT WITHOUT ADEQUATE EYE PROTECTION! YOU
>>COULD PERMANENTLY DAMAGE YOUR EYES!
>>
>> To view the Sun with your naked eyes, purchase material that has been
>>approved as safe for viewing the Sun and look through the material at the
>>Sun. Materials that are safe include shades 12 through 14 welder's glass
>>filters, aluminized Mylar specifically designed for viewing the Sun, and
>>black polymer filters. One of the most authoritative articles on safe solar
>>viewing appeared in the February 1998 issue of Sky & Telescope Magazine (see
>>pages 36 through 40 of that issue). Do your eyes a favor and protect them
>>properly before attempting to spot this sunspot group with your naked eyes.
>>
>> This sunspot will gradually rotate across the face of the visible Sun
>>over the next 11 to 12 days. It will be optimally placed for spotting with
>>the naked eyes between approximately 21 through 26 September.
>>
>> This sunspot complex is also notable in another respect: it has the size
>>and the magnetic complexity to produce very energetic solar flare activity.
>>Major class M and even large X-class solar x-ray flares are often observed
>>from sunspot groups that are as large as this region is. So far, this spot
>>complex has been remarkably quiet. Whether this trend will continue remains
>>to be seen. However, the potential exists for major levels of solar flare
>>activity from this spot complex over the next several days to perhaps
>>throughout much of the next 12 days if the region maintains its size and
>>complexity.
>>
>> Additional information as well as accompanying imagery from professional
>>solar observatories showing this region are available at the web site:
>>
>> http://www.spacew.com/astroalert.html
>
>>** End of AstroAlert **
>>========================================================
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