                  APOD: 2017 August 23 - The Crown of the Sun

                         Astronomy Picture of the Day

    Discover the cosmos! [1] Each day a different image or photograph of our
 fascinating universe is featured, along with a brief explanation written by a
                           professional astronomer.

                                2017 August 23
                                      [2]
                            The Crown of the Sun
Image Credit & Copyright [3] : Derek Demeter [4] (Emil Buehler Planetarium [5]
                                      )

Explanation: During a total solar eclipse [6] , the Sun's extensive outer
atmosphere, or corona, is an inspirational sight. Streamers and shimmering
features visible to the eye span a brightness range of over 10,000 to 1,
making them notoriously difficult to capture in a single photograph. But this
composite of telescopic images covers a wide range of exposure times to reveal
the crown of the Sun [7] in all its glory. The aligned and stacked digital
frames were taken in clear skies [8]  above Stanley, Idaho in the Sawtooth
Mountains during the Sun's total eclipse on August 21. A pinkish solar
prominence extends just beyond the right edge of the solar disk. Even small
details on the dark night side of the New Moon can be made out, illuminated by
sunlight reflected from a Full Earth.

                    Tomorrow's picture: pixels in space [9]

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    Authors & editors: Robert Nemiroff [21] (MTU [22] ) & Jerry Bonnell [23]
                                  (UMCP [24] )
          NASA Official:  Phillip Newman Specific rights apply [25] .
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              A service of: ASD [27]  at NASA [28]  / GSFC [29]
                           & Michigan Tech. U. [30]
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Site notes:
  [1] archivepix.html
  [2] image/1708/solareclipseHDR_largeDemeter.jpg
  [3] lib/about_apod.html#srapply
  [4] https://500px.com/demeterderek
  [5] https://www.seminolestate.edu/planet/
  [6] https://eclipse2017.nasa.gov/
  [7] http://en.wikipedia.org/wiki/Corona
  [8] ap170822.html
  [9] ap170824.html
  [10] ap170822.html
  [11] archivepix.html
  [12] lib/apsubmit2015.html
  [13] lib/aptree.html
  [14] http://antwrp.gsfc.nasa.gov/cgi-bin/apod/apod_search
  [15] calendar/allyears.html
  [16] /apod.rss
  [17] lib/edlinks.html
  [18] lib/about_apod.html
  [19] http://asterisk.apod.com/discuss_apod.php?date=170823
  [20] ap170824.html
  [21] http://www.phy.mtu.edu/faculty/Nemiroff.html
  [22] http://www.phy.mtu.edu/
  [23] http://antwrp.gsfc.nasa.gov/htmltest/jbonnell/www/bonnell.html
  [24] http://www.astro.umd.edu/
  [25] lib/about_apod.html#srapply
  [26] http://www.nasa.gov/about/highlights/HP_Privacy.html
  [27] http://astrophysics.gsfc.nasa.gov/
  [28] http://www.nasa.gov/
  [29] http://www.nasa.gov/centers/goddard/
  [30] http://www.mtu.edu/
