Posts Tagged ‘mattelk’

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It’s comet straight for us!

October 3, 2012

Well, not exactly, but I couldn’t pass up the use of a (bad) pun.

In December 2013, if predictions hold true, we should get a spectacular view of comet C/2012 S1 (ISON) .

ISON was discovered by Russian astromomers Vitali Nevski and Artyom Novichonok on 21 September 2012 using the 0.4-metre reflector of the International Scientific Optical Network near Kislovodsk, Russia.

Follow-up observations were made on 22 September by a team from Remanzacco Observatory in Italy using the iTelescope network.

Animation showing ISON’s movement (the small alternating dot in the centre of the screen)
source: http://remanzacco.blogspot.it

Preliminary analysis of the comet’s orbit shows that it will come to perihelion (closest approach to the Sun) on 28 November 2013 at approimatly 1.1million kilometres above the surface of the Sun, and will pass within 6 million kilometres of the Earth on 26 December 2013.

It should be visible through small telescopes or binoculars from August 2013, becoming visible to the naked eye by late October or early November and (assuming it survives its close encounter with the Sun) remaining so until mid-January 2014.

The exciting part of these predictions is that at its brightest is may up to magnitude -16.  This is amazing considering that a Full Moon is -13, the ISS is -6 and Venus is -5.  So possibly brighter than the Moon!

This is many times brighter than the Great Comet of 2007  which peaked at a magnitude of -5.5 (which, sadly, was only visible in the Southern Hemisphere).

Great Comet of 2007
Attribution: Fir0002/Flagstaffotos

 

We here at Sky-Watching have our fingers crossed that the predictions hold true, as it could mean some spectacular pictures.  Keep tuned for further updates as the comet approaches.

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Lunar eclipse UK viewing

June 15, 2011

by mattelk

While the actual eclipse begins at 18:25, unfortunately the moon will be below the horizon. In the UK we will not get to see the eclipse until it rises at 21:13.

Totality of this eclipse will last from 20:22 until 22:03 with mid-eclipse being at 21:15, and the moon will exit the umbra (the central dark core of the Earth’s shadow) at 23:02, and finally exits the shadow at 00:01.

Unfortunately, the weather conditions in the UK are looking like they won’t be ideal for viewing the eclipse, with cloud forecast across most of the country, however there is a way you can see this event; the internet based telescope network SLOOH has teamed up with Google to broadcast the eclipse live from 3 different telescopes around the world (South Africa, Dubai and Cyprus) from either your browser or your Android powered smartphone

Live lunar eclipse streaming via SLOOH/Google (Browser Version)

I’ll be outside with my camera with its new lens (Canon EF 70-300) and a 1.4x teleconvertor setup on a tripod to see if I can catch any decent pictures, as I’m sure other members of Sky-Watching will be.  Stay tuned for our results over the next couple of days.

All times noted are BST (GMT +1)

As yaska77 has pointed out to me, there may be a little confusion over times and what is actually happening, some places take the start of the eclipse from penumbral entrance and some from umbral entrance, so I have knocked up this little table to help everyone out:

Time Event Description
18:25 Moon enters penumbra Moon enters the very outer edge of the earths shadow, very minor darkening begins.
19:23 Moon enters umbra Moon enters the earth shadow proper, full darkening of the moon begins.
20:22 Totality begins Moon has fully entered the earths shadow and is in full eclipse.
21:13 Mid-Eclipse Halfway through total eclipse.
22:03 Totality ends Moon starts to exit the earths shadow and return to full brightness.
23:02 Moon exits umbra Moon has exited the earth shadow proper and is only partially dimmed.
00:01 Moon exits penumbra Moon returns to full brightness.
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The ISS

April 23, 2011

by mattelk

A quick picture of the International Space Station passing overhead tonight across the Plough

Taken from my back garden after a pleasant barbeque.

Credit: Sky-Watching/M.Elkington

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More Mercury pictures from Messenger.

March 31, 2011

by mattelk

As a follow-up to yesterdays post of the first picture from orbit, here is a link to the JPL Photojournal.

There are some fantastic pictures in the collection already from the flybys of Mercury as messenger manoeuvred into orbit.  At the present moment, there are 311 to browse through.  I suspect that they’ll be adding many more pics in the weeks and months to come.

Here’s a cracking example:

PIA13823: MESSENGER Explores Mercury - In Color

PIA13823: MESSENGER Explores Mercury - In Colour

There is also a nice explanation graphic that accompanies this picture which you can find here. The colours in the pictures are exaggerated for effect, which help show the different types of rock.

This though is possibly my favourite so far:

PIA12842: Spectacular Color . . . with Better Yet to Come

PIA12842: Spectacular Colour . . . with Better Yet to Come

Can’t wait to see some true colour pictures of Mercury’s surface!

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Asteroid near miss!

March 17, 2011

by mattelk

Well, sort of.

The small asteroid 2011 EB74 zoomed past the earth at a mere 203,000 miles yesterday (March 16th), that’s about 85% of Earth-Moon distance.

It was only 47 feet across (about the size of a house), so wouldn’t have survived passage through our atmosphere.

Space.com has an article with more details on this asteroid.

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