APOD: A Sharp View of the Sun (2011 Sep 18)

Comments and questions about the APOD on the main view screen.
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APOD Robot
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APOD: A Sharp View of the Sun (2011 Sep 18)

Post by APOD Robot » Sun Sep 18, 2011 4:06 am

Image A Sharp View of the Sun

Explanation: Here is one of the sharper views of the Sun ever taken. This stunning image shows remarkable details of a dark sunspot across the image bottom and numerous boiling granules which appear like kernels of corn across the top. Taken in 2002, the picture was made using the Swedish Solar Telescope operating on the Canary Island of La Palma. The high resolution image was achieved using sophisticated adaptive optics, digital image stacking, and other processing techniques to counter the blurring effect of Earth's atmosphere. Currently a sunspot group is crossing the Sun that is so large it can be easily seen by the cautious observer even without magnification.

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nstahl
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Re: APOD: A Sharp View of the Sun (2011 Sep 18)

Post by nstahl » Sun Sep 18, 2011 11:08 am

Again, very nice image and a great APOD.

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orin stepanek
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Re: APOD: A Sharp View of the Sun (2011 Sep 18)

Post by orin stepanek » Sun Sep 18, 2011 11:44 am

Orin

Smile today; tomorrow's another day!

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Re: APOD: A Sharp View of the Sun (2011 Sep 18)

Post by cketter » Sun Sep 18, 2011 5:07 pm

Very cool APOD.
This weekend, big sunspot AR1289
is approaching the sun's western limb
where it will soon disappear from view.
Jesús Carmona de Argila of Madrid, Spain,
captured these parting shots on Sept. 17th, 2011:
On the left is H-alpha
On the right is visible wavelengths
I saw this image on spaceweather.com today.
A stunning image of a more recent sunspot.
I like the dual display.

To all you geezers and what-have-you's out there,
How did I do? I haven't used html in over 10 years!
Also,is it legal to borrow images and post them like
this? I don't want to break any copyright laws.
Last edited by bystander on Sun Sep 18, 2011 6:32 pm, edited 2 times in total.
Reason: Added link to source and replaced <img> tag with <img2>

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Beyond
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Re: APOD: A Sharp View of the Sun (2011 Sep 18)

Post by Beyond » Sun Sep 18, 2011 5:13 pm

Hey, neat, orin. I finally got to see inside a sunspot. Did you check out one of the other videos where if you stare at a black dot,while a grey bar is moving, the grey bar turns blue? I found that it works that way using either eye also.
Last edited by Beyond on Mon Sep 19, 2011 1:45 am, edited 1 time in total.
To find the Truth, you must go Beyond.

SJoe
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Re: APOD: A Sharp View of the Sun (2011 Sep 18)

Post by SJoe » Sun Sep 18, 2011 5:18 pm

Anyone else notice the face?

Image

Awesome picture.It's hard to believe what your looking at is the sun.

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Re: APOD: A Sharp View of the Sun (2011 Sep 18)

Post by Boomer12k » Sun Sep 18, 2011 6:27 pm

I know some people who can go there and do personal Solar exploration....

AWESOME PIC!!!! Like looking into a literal Hell.

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bystander
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Re: APOD: A Sharp View of the Sun (2011 Sep 18)

Post by bystander » Sun Sep 18, 2011 6:30 pm

cketter wrote:To all you geezers and what-have-you's out there, How did I do? I haven't used html in over 10 years!
Also,is it legal to borrow images and post them like this? I don't want to break any copyright laws.
If the image is from a public site (e.g. spaceweather.com) and you provide the source and credits,
(which you have done), you are probably safe from copyright law. You did fine.

BTW, it's nice to provide a link to the source, and the <img2> tag allows you to see the full image.
Know the quiet place within your heart and touch the rainbow of possibility; be
alive to the gentle breeze of communication, and please stop being such a jerk.
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orin stepanek
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Re: APOD: A Sharp View of the Sun (2011 Sep 18)

Post by orin stepanek » Sun Sep 18, 2011 10:55 pm

Beyond wrote:
Hey, neat, orin. I finally got to see inside a sunspot. Did you check out one of the other videos where if you stare at a moving grey bar, it turns blue? I found that it works that way using either eye also.
Cool! 8-) I'll have to check that out. I noticed if you stare at a lit object (like Your computer screen) And then close your eyes; you can see an image of the screen. :mrgreen:
Orin

Smile today; tomorrow's another day!

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Re: APOD: A Sharp View of the Sun (2011 Sep 18)

Post by neufer » Mon Sep 19, 2011 9:47 pm

http://en.wikipedia.org/wiki/Sunspot wrote: <<The earliest surviving record of sunspot observation dates from the 364 BC, based on comments by Chinese astronomer Gan De in a star catalogue. By 28 BC, Chinese astronomers were regularly recording sunspot observations in official imperial records. The first clear mention of a sunspot in Western literature was on 17 March 807 AD by the Benedictine monk Adelmus, who observed a large sunspot which was visible for eight days; however, Adelmus incorrectly concluded he was observing a transit of Mercury. A large sunspot was also seen at the time of Charlemagne's death in 813 AD. Sunspot activity in 1129 was described by John of Worcester, and Averroes provided a description of sunspots later in the 12th century; however, these observations were also misinterpreted as planetary transits, until Galileo gave the correct explanation.>>
Art Neuendorffer

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Re: APOD: A Sharp View of the Sun (2011 Sep 18)

Post by neufer » Mon Sep 19, 2011 10:07 pm

cketter wrote:
Very cool APOD.
Very cool TELESCOPE :!:
Art Neuendorffer