      APOD: 2017 August 30 - Panoramic Eclipse Composite with Star Trails

                         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 30
                                      [2]
                Panoramic Eclipse Composite with Star Trails
Image Credit & Copyright [3] : Stephane Vetter (Nuits sacrees [4] , TWAN [5] )

Explanation: What was happening in the sky during last week's total solar
eclipse? This featured little-planet [6] , all-sky [7] , double time-lapse,
digitally-fused composite captured celestial action during both night and day
from a single location. In this 360x180 panorama [8] , north and south are at
the image bottom and top, while east and west are at the left and right edges,
respectively. During four hours the night before the eclipse, star trails [9]
were captured circling the north celestial pole [10]  (bottom) as the Earth
[11]  spun. During the day of the total eclipse, the Sun [12]  was captured
every fifteen minutes from sunrise to sunset (top), sometimes in partial
eclipse. All of these images were then digitally merged onto a single image
taken exactly during the total solar eclipse [13] . Then, the Sun's bright
corona [14]  could be seen flaring around the dark new Moon [15]  (upper
left), while Venus [16]  simultaneously became easily visible (top). The tree
in the middle, below the camera, is a Douglas fir [17] . The images were taken
with care and planning [18]  at Magone Lake [19]  in Oregon [20] , USA [21] .

  Total Eclipse 2017: More memorable images -- please "Like" your favorites.
                                    [22]
                      Tomorrow's picture: open space [23]

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    Authors & editors: Robert Nemiroff [35] (MTU [36] ) & Jerry Bonnell [37]
                                  (UMCP [38] )
          NASA Official:  Phillip Newman Specific rights apply [39] .
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              A service of: ASD [41]  at NASA [42]  / GSFC [43]
                           & Michigan Tech. U. [44]
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Site notes:
  [1] archivepix.html
  [2] image/1708/EclipsePrince_Vetter_1500.jpg
  [3] lib/about_apod.html#srapply
  [4] http://nuitsacrees.fr
  [5] http://www.twanight.org/newTWAN/index.asp
  [6] https://en.wikipedia.org/wiki/The_Little_Prince
  [7] ap160902.html
  [8] https://en.wikipedia.org/wiki/Stereographic_projection
  [9] ap150625.html
  [10]
http://solar.physics.montana.edu/ypop/Classroom/Lessons/Sundials/skydome.html
  [11] ap070325.html
  [12] https://www.nasa.gov/sun
  [13] https://eclipse2017.nasa.gov/
  [14] ap170813.html
  [15] http://aa.usno.navy.mil/faq/docs/moon_phases.php
  [16] ap100516.html
  [17] https://en.wikipedia.org/wiki/Douglas_fir
  [18] https://erinina.files.wordpress.com/2012/04/cat_using_computer.jpg
  [19] https://www.youtube.com/watch?v=kI2JNS3SiJ8
  [20] https://en.wikipedia.org/wiki/Oregon
  [21] https://www.cia.gov/library/publications/the-world-factbook/geos/us.html
  [22]
https://www.facebook.com/pg/AstronomyPictureOfTheDay/photos/
?tab=album&album_id=1396657207036403
  [23] ap170831.html
  [24] ap170829.html
  [25] archivepix.html
  [26] lib/apsubmit2015.html
  [27] lib/aptree.html
  [28] https://antwrp.gsfc.nasa.gov/cgi-bin/apod/apod_search
  [29] calendar/allyears.html
  [30] /apod.rss
  [31] lib/edlinks.html
  [32] lib/about_apod.html
  [33] http://asterisk.apod.com/discuss_apod.php?date=170830
  [34] ap170831.html
  [35] http://www.phy.mtu.edu/faculty/Nemiroff.html
  [36] http://www.phy.mtu.edu/
  [37] https://antwrp.gsfc.nasa.gov/htmltest/jbonnell/www/bonnell.html
  [38] http://www.astro.umd.edu/
  [39] lib/about_apod.html#srapply
  [40] https://www.nasa.gov/about/highlights/HP_Privacy.html
  [41] https://astrophysics.gsfc.nasa.gov/
  [42] https://www.nasa.gov/
  [43] https://www.nasa.gov/centers/goddard/
  [44] http://www.mtu.edu/
