Oleg Zabluda's blog
Tuesday, May 22, 2012
 
International Space Station (ISS) solar transit during the partial solar eclipse, taken from the area of Muscat in...
International Space Station (ISS) solar transit during the partial solar eclipse, taken from the area of Muscat in the Sultanate of Oman on January 4th 2011 at 9:09 UT.

Transit duration: 0.86s. ISS is 510 km away, 0.1 km across, the Moon is 385,000 km away (750x farther), 3500 km across. The Sun is 150,000,000 km away (300,000x farther), 1,400,000 km across. If the center of the Sun was placed at Earth, it would extend 2x farther than the Moon.

ISS projection on the Sun is 0.108*150,000,000/510=30,000 km across (2.5x diameter of the Earth). From this, you can gauge the size of the sunspot it is passing.


Takahashi FSQ-106ED refractor on EM-10 mount, Canon 5D mark II. 1/5000s exposure at 100 iso.
Transit forecast calculated by http://www.calsky.com/
http://legault.perso.sfr.fr/eclipse110104_solar_transit.html
http://blogs.discovermagazine.com/badastronomy/2011/01/04/insanely-awesome-solar-eclipse-picture/
http://legault.perso.sfr.fr/eclipse110104_solar_transit.html

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