Sunrise Analemma (with a little extra)
An analemma is that figure-8 curve that
you get when you
mark the position
of the Sun at the same time each day
throughout
planet Earth's year.
In this case, a composite of 17 individual images taken at 0231 UT
on dates between April 2 and September 16 follows half the analemma curve.
The scene looks east
toward the rising sun and the Caspian sea from the boardwalk in the port
city of Baku, Azerbaijan.
With the sun nearest the horizon, those dates almost span the period
between the 2012 equinoxes on
March 20 and September 22.
The northern summer Solstice
on June 20 corresponds to the top of the
figure 8 at the left, when the Sun stood at its northernmost
declination.
Of course,
this year the exposure made on June 6 contained a little
something extra.
Slightly enhanced, the little black spot on the bright solar disk near
the top of the frame is planet Venus, caught in
a rare transit during
this well-planned sunrise analemma project.