Solar eclipse at Leirubakki
The next total solar eclipse is on March 20, 2015 and will be
around 97% here at Leirubakki. We have very little light pollution here so it
is ideal to look at the solar eclipse as well as the northern lights. The solar
eclipse on March 20, start at 8:30 in the morning and 2 hours. As seen from the Earth, a solar eclips occurs when the Moon passes
between the Sun and Earth, and the Moon fully or partially blocks
("occults") the Sun. This can happen only at new moon, when the Sun
and the Moon are in conjunction as seen from Earth. In a total eclipse, the
disk of the Sun is fully obscured by the Moon. In partial and annular eclipses
only part of the Sun is obscured.
If the Moon
were in a perfectly circular orbit, a little closer to the Earth, and in the
same orbital plane, there would be total solar eclipses every single month.
However, the Moon's orbit is inclined (tilted) at more than 5 degrees to
Earth's orbit around the Sun so its shadow at new moon usually misses Earth.
Earth's orbit is called the ecliptic plane as the Moon's orbit must cross this
plane in order for an eclipse (both solar as well as lunar) to occur. In
addition, the Moon's actual orbit is elliptical, often taking it far enough
away from Earth that apparent size is not large enough to block the Sun
totally. The orbital planes cross each other at a line of nodes resulting in at
least two, and up to five, solar eclipses occurring each year; no more than two
of which can be total eclipses. However, total solar eclipses are
rare at any particular location because totality exists only along a narrow
path on Earth's surface traced by the Moon's shadow or umbra.
An eclipse is
a natural phenomenon. Nevertheless, in some ancient and modern cultures, solar
eclipses have been attributed to supernatural causes or regarded as bad omens.
A total solar eclipse can be frightening to people who are unaware of its
astronomical explanation, as the Sun seems to disappear during the day and the
sky darkens in a matter of minutes.
directly at the Sun can lead to permanent eye damage or blindness, special eye
protection or indirect viewing techniques are used when viewing a solar eclipse.
It is technically safe to view only the total phase of a total solar eclipse
with the unaided eye and without protection, however this is a dangerous
practice as most people are not trained to recognize the phases of an eclipse
which can span over two hours while the total phase can only last up to 7.5
minutes for any one location.
See here a
link for beginners: http://www.mreclipse.com/Special/SEprimer.html
See here a link at TimeandDate.com for Iceland: