Posts Tagged ‘Saturn’

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Astronomy is contagious!

April 29, 2013

by yaska77

The great thing about astronomy is that anyone with a sky over their heads can get involved. You don’t need a truckload of expensive gear, just an interest and a modicum of patience will get you a long way!

Soon after I got my camera and started posting images on this blog, Mick Judd (a talented photographer who I happen to work with) also began skywatching, and he has captured some great shots with limited “astro-specific” equipment.

After we recently discussed the upcoming penumbral eclipse on 25th April (see our images here) Mick went home and over the course of a few evenings has produced the following short video, which we hope you enjoy.

We think it’s great, and just the sort of thing we hope will help others catch the astronomy bug! But how did he do it?  I’ll let him explain that himself!

“To capture the images I used two different eyepieces on a D=60mm F=700mm telescope; an H20 to fit the whole of the moon in the frame and an HF6 for the close-ups of the lunar surface and for Saturn. To attach the camera (a Sony Ericsson Xperia Arc S mobile phone) I drilled a hole in the middle of a plastic lid from a can of hair mousse, and glued it around the lens hole on the phone’s protective case.

Slotting the plastic lid over the eyepiece housing on the telescope and pushing it into place, it’s then a bit of hit and miss with lining up what I can see in the finder scope with what I can see on the phone’s display. The Xperia Arc S has a lot of camera settings so it’s just a matter of adjusting EV levels and using a bit of digital zoom to fill the frame to avoid seeing the round edge of the eyepiece.

To try and make sure that I capture something that is sharp I slightly tweak the scope’s focus every now and then between shots. The Sunspots were viewed through an additionally fitted Solar filter.  All the footage in the video was captured between 15th and 27th April 2013.”

Top work Judd bloke, and an ingenious set up!

You can see more of Mick’s photos on his Flickr page here

Now everyone get outdoors and enjoy the night sky! :)

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Sky-Watching Images of the Year 2011

December 31, 2011

by yaska77

You might not have noticed but we love posting astro related imagery here at Sky-Watching. With that in mind we decided to put together our favourite images from throughout the year, as voted for by us :)

Sky-Watching Image of the Year 2011

50 stacked images helped the dust lane details stand out in my image of Andromeda (click to enlarge) - Credit: Sky-Watching/A.Welbourn

At the risk of sounding like blowing our own trumpet, chosen independently as their favourite blog image from 2011 by both tte-77 and mattelk (with no coercion from me whatsoever!) this was one of the first ever stacked images I captured and processed.

Galaxies are fascinating for their variety and magnitude, so to photograph one so clearly using our own equipment through our own light polluted skies helped my M31 Andromeda image stand out.

Creating images like this was one of the main reasons I bought a telescope and camera in the first place, so astrophotography can be very rewarding when your efforts pay off.

The original post (also featuring the Orion Nebula and The Pleiades) can be viewed here.

Sky-Watching Best Planetary Image 2011

The rings of Saturn shine brightly as the planet eclipses the Sun (click to enlarge) - Credit: Cassini Imaging Team, SSI, JPL, ESA, NASA

As soon as mattelk first posted this image of Saturn from the Cassini spacecraft we knew it would be a contender for the best planetary image of the year.

Taken by Cassini as it drifted in the shadow of the planet Saturn (looking towards the eclipsed sun) the night side of the planet is illuminated by sunlight reflected from its own ring system, and the rings themselves are lit by sunlight scattering off of the particles in the ring system.

The small white dot just top left of the main ring system is us, planet Earth!

Jaw-dropping.

Sky-Watching Historic Images of 2011

We followed the last months of NASA’s space shuttle program incredibly closely, so as 2011 saw the end of the iconic spacecraft (with all 3 remaining orbiters retired to museums) it’s only right that we picked a couple of historic shuttle photos for images of particular historic interest.

Docked together 220 miles above the Earth, the penultimate shuttle flight STS-134 Endeavour and the ISS as photographed by ESA Astronaut Paolo Nespoli (Click to enlarge) - Credit: NASA

The image captured above by Paolo Nespoli from a Soyuz capsule returning to Earth were historic, as the first ever images taken from space of a shuttle docked to the ISS. Nothing like waiting for the penultimate mission!

NASA officials said this spacecraft “family portrait” served as a reminder of the contributions the shuttle program made to the construction of the International Space Station.  The 100 billion dollar station began assembly in 1998 with the Russian module Zarya, and then a certain orbiter called Endeavour (STS-88) took the first US built section (the Unity Module) into orbit the same year.

The NASA gallery page features several more photographs, take a look here.

Launching into history, the iconic shuttle Atlantis spears skyward beginning the last ever shuttle mission (click to enlarge) - Credit: NASA/Bill Ingalls

NASA’s space shuttle Atlantis (STS-135) blasted into orbit on 8th July 2011 on the 135th and final space shuttle mission, launching from Kennedy Space Center (on a 13 day mission delivering supplies to the ISS) with thousands of spectators lining the roads and beaches nearby.

With the shuttle flying no more, we’re eagerly awaiting NASA’s next innovation in launch systems.

It’s been a good year for great images, and we’re now eagerly waiting to see what 2012 will bring.

Different images evoke different responses in different people, but we managed to agree what images should feature, even if I abstained from voting for one of them (for obvious reasons of favouritism) ;)

And on that note all of us at Sky-Watching wish all our visitors, subscribers and Twitter followers a very Happy New Year, may 2012 be great for all of you.

So let’s finish 2011 with a smile, this little image posted through Twitter made me laugh, and from comments made it caused a few chuckles in others too!

Just for Fun

NASA claim plans to send humans back to the Moon haven't been hit by budget cuts... (click to enlarge) - Credit: Sky-Watching/A.Welbourn

Just kidding :)

Happy New Year!

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Astronomy Advent Calendar – 19th December

December 19, 2011

by yaska77

Yet another fantastic image we featured earlier this year to continue our astronomy advent calendar image count-down.

There aren’t many days left until we get to Christmas eve now, so the images we’re highlighting now are the ones that most took our breath away in 2011 :)

Day 19

Astronomy Advent Calendar 19th December - The rings of Saturn shine brightly with the eclipsed Sun behind them (click to enlarge) - Credit: Cassini Imaging Team, SSI, JPL, ESA, NASA

This amazing picture was taken by the Cassini spacecraft while it drifted in the shadow of the planet Saturn, looking towards the eclipsed sun.  The night side of the planet is illuminated by sunlight reflected from its own ring system, and the rings themselves are lit by sunlight scattering off of the particles in the ring system.

The outer visible ring is Saturn’s E ring, which has been formed from the ejections from the recently discovered ice-fountains of the moon Enceladus.

And if you look closely on the left hand side just above the main bright rings, that tiny dot is the Earth.

Incandescent! :)

View yesterday’s image

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Astronomy Events – November 2011

October 31, 2011

by yaska77

It’s been a little quiet here of late, but we’re hoping better weather is on the way. It can’t be cloudy all the time right?!

That said, October was actually one of our best ever months for observing, we even got the best images we’ve taken with our own equipment so far! Most of them came about from astro events we listed, so here is a list of upcoming astronomy events for November to whet your appetites.

Tuesday 1st November – The Great Red Spot on Jupiter will be visible through a good telescope on the central median line around 21:15 (UTC/GMT) tonight, but also on a number of nights throughout November (see comments below for more info)

Jupiter is only just past opposition so is visible in the night sky all night long for the whole month. A telescope or good pair of binoculars will help show the four brightest Galilean moons (first discovered by Galileo in January 1610), which can be seen stretched out in a line in our photograph below

Jupiter with three moons to the left (Callisto, Ganymede and Io) and one (Europa) to the right, 1st October 2011 (click to enlarge) - Credit: Sky-Watching/A.Welbourn

Wednesday 2nd November -  First quarter Moon

Saturday 5th November – Tonight is the peak of the Southern Taurid meteor shower. Because of the gravitational effect of planets (particularly Jupiter) the Taurids have become spread out over time, allowing separate streams known as the Southern Taurids and Northern Taurids to be observable on different dates

Tuesday 8th November – Moon at Apogee (406,180 km), the farthest point it reaches on it’s orbit around the Earth. Asteroid 2005 YU55 will make a close pass by the Earth today (closer than the orbit of the Moon) but poses no danger

April's Full Moon looking bright as imaged using a 200mm Newtonian Reflector Telescope (click to enlarge) - Credit: Sky-Watching/A.Welbourn

Thursday 10th November – Full Moon, sometimes called the Beaver Moon or Dark Moon

Saturday 12th November – This evening sees the peak of the Northern Taurid meteor shower, however the recent full Moon (which is very close to the radiant) will obscure all but the brightest ones

Orionid meteor from October - Meteor observing can be addictive, and capturing them in a photo isn't easy (click to enlarge) - Credit: Sky-Watching/A.Welbourn

Thursday 17th/Friday 18th  November – Leonid meteor shower peaks tonight but the waning Moon may be in the way. Its light will block out a lot of the fainter meteors but you should still see some in darker parts of the sky

Leonid meteor shower radiant position at 01:30am 18th November 2011 (click to enlarge) - Credit: Stellarium/Sky-Watching

Friday 18th November – Last quarter Moon

Wednesday 23rd November – Moon at Perigee (359,690 km), the closest point of its orbit around the Earth. As it doesn’t rise until around 05:15 UTC/GMT (and will be only 5% lit) it won’t interfere if you fancy having a look at some deep sky objects.

Orion will be well above the horizon by 22:00 and our perennial favourite M42 (the Orion Nebula) should be a great sight through binoculars or a small telescope. Located in the sword hanging from Orion’s belt, we managed to get a good look at it in October (it’s one of the autumn constellations we always take a peek at when the skies are clear!)

In the brightest part of the Nebula you can see the four stars that make up the "Trapezium Cluster" (click to enlarge) - Credit: Sky-Watching/A.Welbourn

Friday 25th November – New Moon and partial Solar eclipse, though it will only be visible from Antarctica and parts of the Southern Ocean

Sunday 27th November – Saturn is making a welcome return to our skies, and can be see before dawn (rising just before 04:00 UTC/GMT) to the East near the bright star Spica, part of the constellation Virgo

Remember, it can take your eyes up to 20 minutes to become properly dark adapted, and anything up to an hour for a telescope to reach ambient temperature outside (to ensure the best image), so give yourself plenty of time to get set up!

We’ve also added the “Monthly Guide” section in the menu bar to the right (where this guide will appear), so next time you visit you can find it again easily!

Guide images created with Stellarium

Archive:
Astronomy Events – October 2011
Astronomy Events – September 2011
Astronomy Events – August 2011

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That’s no moon, it’s a…… oh wait, they’re all moons

September 15, 2011

by matt_elk

Here’s another amazing picture from the Cassini probe.

A quintet of Saturn's moons come together in Cassini's field of view for this portrait - Credit: NASA/JPL-Caltech/SSI

From left to right; Janus (179 km diameter), Pandora (81 kilometres diameter), Enceladus (504 kilometres diameter), Mimas (396 kilometres diameter) and finally Rhea (1528 kilometres diameter).

This picture was taken by Cassini’s narrow-angle camera on July 29, 2011 at an approximate distance of 1.1 million kilometers from Rhea and 1.8 million kilometres from Enceladus.

And people say that NASA is a waste of money. Pah.

Source: CICLOPS via MSNC

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