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APOD: The Big Corona (2019 Jul 01)
Posted: Mon Jul 01, 2019 4:06 am
by APOD Robot
The Big Corona
Explanation: Most photographs don't adequately portray the magnificence of the
Sun's corona. Seeing the
corona first-hand during a total
solar eclipse is
unparalleled. The
human eye can adapt to see coronal
features and
extent that average cameras usually cannot. Welcome, however, to the
digital age. The
featured central image
digitally combined short and long exposures that were processed to highlight faint and extended features in the corona of the
total solar eclipse that occurred in
August of 2017. Clearly visible are
intricate layers and glowing caustics of an ever changing mixture of hot gas and
magnetic fields in the Sun's corona.
Looping prominences appear bright pink just past the Sun's
limb. Faint details on the night side of the
New Moon can even be made out, illuminated by sunlight reflected from the dayside of the
Full Earth. Images taken seconds before and after the total eclipse show glimpses of the background Sun known as
Baily's Beads and
Diamond Ring. Tomorrow, a
new total solar eclipse will be visible from parts of
South America.
Re: APOD: The Big Corona (2019 Jul 01)
Posted: Mon Jul 01, 2019 4:31 am
by dickzland
Unfortunately many image processors fail to recognize that we are observing a 3D array from the sun's corona, the overlapping features are difficult
to sort out. Some streamers are coming toward us, others away. Strangely human vision when looking at this phenomenon sorts out the continuous features successfully when scanning the total solar event. Stacked digital images being processed do not enjoy the human experience. However spectacular these highly manipulated images are, the truth scientifically can only be from resolution of foreground and background solar atmosphere data from space as the STERIO satellites were to provide.
Re: APOD: The Big Corona (2019 Jul 01)
Posted: Mon Jul 01, 2019 5:12 am
by bystander
Re: APOD: The Big Corona (2019 Jul 01)
Posted: Mon Jul 01, 2019 11:28 am
by orin stepanek
Eclipses always seem to fascinate!
![Cool 8-)](./images/smilies/icon_cool.gif)
Re: APOD: The Big Corona (2019 Jul 01)
Posted: Mon Jul 01, 2019 12:44 pm
by MarkBour
I wonder, was there ever any early confusion, with some observers thinking there was a mysterious lunar corona?
Re: APOD: The Big Corona (2019 Jul 01)
Posted: Mon Jul 01, 2019 1:06 pm
by NGC3314
MarkBour wrote: ↑Mon Jul 01, 2019 12:44 pm
I wonder, was there ever any early confusion, with some observers thinking there was a mysterious lunar corona?
Apparently it was ambiguous until 1724, when Giacomo Maraldi noted that the Moon moves during totality with respect to the inner features in the corona, so it must belong to the Sun. (Best Google hint on this came from
http://www.mreclipse.com/Totality3/TotalityApH.html).
Re: APOD: The Big Corona (2019 Jul 01)
Posted: Mon Jul 01, 2019 5:22 pm
by DrJoeS
That was very interesting! Another great job by the APOD team!
Re: APOD: The Big Corona (2019 Jul 01)
Posted: Tue Jul 02, 2019 4:06 am
by Boomer12k
I live in Salem, Oregon... it was a hotspot for the eclipse... here is my shot....
It was my first really viewed Solar Eclipse... had a good front yard view...totality is with my camcorder. The other is with my telescope and astronomy camera.
Giant Pacman Sunspot Eater...
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