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APOD: A Sharp View of the Sun (2011 Sep 18)
Posted: Sun Sep 18, 2011 4:06 am
by APOD Robot
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.
[/b]
Re: APOD: A Sharp View of the Sun (2011 Sep 18)
Posted: Sun Sep 18, 2011 11:08 am
by nstahl
Again, very nice image and a great APOD.
Re: APOD: A Sharp View of the Sun (2011 Sep 18)
Posted: Sun Sep 18, 2011 11:44 am
by orin stepanek
Re: APOD: A Sharp View of the Sun (2011 Sep 18)
Posted: Sun Sep 18, 2011 5:07 pm
by cketter
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.
Re: APOD: A Sharp View of the Sun (2011 Sep 18)
Posted: Sun Sep 18, 2011 5:13 pm
by Beyond
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.
Re: APOD: A Sharp View of the Sun (2011 Sep 18)
Posted: Sun Sep 18, 2011 5:18 pm
by SJoe
Anyone else notice the face?
Awesome picture.It's hard to believe what your looking at is the sun.
Re: APOD: A Sharp View of the Sun (2011 Sep 18)
Posted: Sun Sep 18, 2011 6:27 pm
by Boomer12k
I know some people who can go there and do personal Solar exploration....
AWESOME PIC!!!! Like looking into a literal Hell.
Re: APOD: A Sharp View of the Sun (2011 Sep 18)
Posted: Sun Sep 18, 2011 6:30 pm
by bystander
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.
Re: APOD: A Sharp View of the Sun (2011 Sep 18)
Posted: Sun Sep 18, 2011 10:55 pm
by orin stepanek
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!
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.
Re: APOD: A Sharp View of the Sun (2011 Sep 18)
Posted: Mon Sep 19, 2011 9:47 pm
by neufer
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.>>
Re: APOD: A Sharp View of the Sun (2011 Sep 18)
Posted: Mon Sep 19, 2011 10:07 pm
by neufer
cketter wrote:
Very cool APOD.
Very cool
TELESCOPE 
