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Total Lunar Eclipse: vejam os horarios na sua cidade! [EN]

Source: http://www.sydneyobservatory.com.au/lunar-eclipses/

Total lunar eclipse 15 April 2014

There will be a total eclipse of the Moon on Tuesday 15 April 2014. For most of Australia the Moon will rise in the eastern sky already totally eclipsed just as the Sun is setting in the west. It should be really spectacular if the sky is clear – with the Moon appearing large and red. Australian eclipse times are below.

Live video stream here

The event at Sydney Observatory is now fully booked but we will be blogging about the eclipse from Sydney Observatory and live streaming video of the eclipse so you will be able to share the experience with us.

Lunar eclipse 28 August 2007, photos by Geoffrey Wyatt

Lunar eclipse 28 August 2007, photos and animation by Geoffrey Wyatt

Other video of the eclipse

If the sky is cloudy in Sydney, you might try the following (though these tend to have a Northern Hemisphere perspective) for their lunar eclipse coverage:
slooh
ustream
NASA
Galactic Connection
Griffith Observatory

Where to look

To see it, people need a clear view towards the eastern horizon – somewhere looking out over the ocean would be good. At the end of totality at 6.25pm, the Moon will be only 10 degrees (that is the width of a fist at arm’s length) above the horizon so from many suburban locations the view would be blocked by neighbouring houses or trees. It is safe to look at a lunar eclipse and fun to photograph it.

Eclipse times for Australian cities (local time)

Adelaide: The Moon rises at 5.48pm; total eclipse ends at 5.55pm; the eclipse ends at 7.03pm
Brisbane: The Moon rises at 5.27pm; maximum eclipse is at 5.46pm; total eclipse ends at 6.25pm; the eclipse ends at 7.33pm.
Darwin: The Moon rises at 6.41pm; the eclipse ends at 7.33pm.
Hobart: The Moon rises at 5.33pm; maximum eclipse is at 5.46pm; total eclipse ends at 6.25pm; the eclipse ends at 7.33pm.
Melbourne: The Moon rises at 5.49pm; total eclipse ends at 6.25pm; the eclipse ends at 7.33pm.
Sydney: The Moon rises at 5.28pm; maximum eclipse is at 5.46pm; total eclipse ends at 6.25pm; the eclipse ends at 7.33pm.

On average there is an eclipse of the Moon every eight months, with a little under half of these total. The actual number of lunar eclipses in a year can range from none to a maximum of three. A total eclipse of the Moon is visible from Australia on average every 2.8 years.

The timing means people in Perth will completely miss the eclipse but people in New Zealand will see the whole eclipse.

There are more total eclipses over the next period than usual. In Australia, total lunar eclipses will occur on 15 April 2014, 8 October 2014 and 4 April 2015. In parts of the Northern Hemisphere there will also be a total lunar eclipse on 27 September 2015.

Why the Moon will be red

The Moon will appear red during totality because red light from the Sun is bent by the Earth’s atmosphere onto the Moon. The light is red as other colours such as blue are scattered in all directions leaving red, just as at sunset. Another way of putting it is that seen from the Moon the Earth is dark, but surrounded by an atmosphere lit up by either by sunset or dawn. Whether the Moon will go red and how dark a red depends on atmospheric conditions at the time of the eclipse. This post about the 2007 total lunar eclipse will give you some idea of what we can hope to see on the night.

How do eclipses occur?
(Dr Nick Lomb, Sydney Observatory’s consultant astronomer and curator, provided the following helpful explanation in his post about the partial lunar eclipse in 2010.)
Eclipses of the Moon occur when the Moon moves into the shadow of the Earth. When the Moon is fully immersed in the dark part of the shadow we see a total eclipse of the Moon. At such times the eclipsed Moon usually takes on a dark reddish colour from the light bent or refracted onto the Moon by the Earth’s atmosphere. When the Moon is only partially immersed in the dark part of the shadow we have a partial eclipse.

Eclipse basics

How eclipses of both the Sun and Moon occur. Sketch Nick Lomb

An eclipse of the Moon can only happen at full Moon phase. It does not happen every month as the path the Moon takes around the Earth is tilted by about 5° to the path the Earth takes around the Sun. Hence at full Moon the Earth’s shadow usually falls below or above the Moon.

What is the history of Moon eclipses?
Eclipses of the Moon first provided proof that the Earth is a globe as the edge of the Earth’s shadow moving across the Moon is always part of a circle. This was noticed by the Greek philosopher Aristotle who lived in the fourth century before our era.

According to ancient Chinese legend an eclipse of the Moon occurs when a dragon begins eating the Moon. Hence the tradition in China during eclipses was to make as much noise as possible by banging on drums and pots to scare away the dragon. This technique has so far succeeded on each occasion.

More on astronomy and eclipses from Sydney Observatory

April 2014 is a month of eclipses. On Tuesday 29 April there will be a partial eclipse of the Sun seen throughout Australia – you can book here to experience the solar eclipse at Sydney Observatory.

Thanks to Dr Nick Lomb for information in his annual book, the Australasian sky guide and in the April 2014 monthly sky guide podcast which provided information for this post. Thanks to Nick also for his contributions to this post.

Just type ‘lunar eclipse’ into the search field of our blog to find out more about this phenomenon.

Check out our free monthly sky guides including podcast, sky map and transcription, giving you a guide to highlights in the night sky for each month of the year.

Check out also our free Moon phase calendar.

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