Archive for the ‘Image gallery’ Category

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Hubble’s eXtreme view of the Universe

September 26, 2012

by yaska77

When it comes to looking into and imaging the past, the Hubble Space Telescope continues to produce shots of breathtaking wonder.

Called the eXtreme Deep Field, or XDF, the image below was assembled by combining 10 years of NASA Hubble Space Telescope photographs taken of a patch of sky at the center of the original Hubble Ultra Deep Field.

Astronomers have assembled a new, improved portrait of mankind’s deepest-ever view of the universe (click to enlarge) – Credit: NASA; ESA; G. Illingworth, D. Magee, and P. Oesch, University of California, Santa Cruz; R. Bouwens, Leiden University; and the HUDF09 Team

The Hubble Ultra Deep Field is an image of a small area of space in the constellation Fornax (latin for Furnace) located in the southern sky, far away from the glare of the Milky Way, and was created using Hubble Space Telescope data from 2003 and 2004.

By collecting faint light over many hours of observation (around 500 hours) it revealed thousands of galaxies, both nearby and very distant, making it the deepest image of the universe ever taken.

A finger held at arm’s length would appear to be about twice the width of the moon in this image (click to enlarge) – Credit: NASA/ESA and Z. Levay, STScI; Moon Image Credit: T. Rector/I. Dell’Antonio/NOAO/AURA/NSF

The new full-color XDF image contains about 5,500 galaxies even within its smaller field of view. The faintest galaxies are one ten-billionth the brightness of what the human eye can see.

The history of galaxies – from soon after the first galaxies were born to the great galaxies of today, like our Milky Way – is laid out in this one amazing image.

Garth Illingworth of the University of California at Santa Cruz (principal investigator of the Hubble Ultra Deep Field program) said, “The XDF is the deepest image of the sky ever obtained and reveals the faintest and most distant galaxies ever seen. XDF allows us to explore further back in time than ever before”.

It should certainly keep astronomers busy for a while, at least until the James Webb Space Telescope launches! With it’s specialised infrared instruments it is expected to find even fainter galaxies that existed when the universe was just a few hundred million years old.

You can read more details on the NASA Hubble Website here.  Galactic!

Source: NASA

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Latest Curiosity images from Mars

August 7, 2012

by yaska77

We promised you images and here are the latest batch from NASA JPL, sent from Curiosity over the last couple of days. We start first though with a fantastic image captured by the Mars Reconnaissance Orbiter and it’s HiRISE camera!

This image was taken just moments after Curiosity’s descent speed had slowed from thousands of kilometers per hour to just hundreds (click to enlarge) Credit: NASA/JPL-Caltech

In the expanded view you can see the band details on the “supersonic” parachute, and even the hole in the centre, as Curiosity heads towards a famous landing! When fully deployed the craft experienced over 9G of force as it slowed.

Here you can see Curiosity’s heat shield as it drops away from the rover during descent (click to enlarge) – Credit: NASA/JPL-Caltech

The image above was obtained by the Mars Descent Imager instrument (known as MARDI) and shows the 15-foot (4.5-meter) diameter heat shield when it was about 50 feet (16 meters) from the spacecraft.

It was obtained two and a half minutes before touchdown on the surface of Mars and about three seconds after heat shield separation.

Curiosity eyes up its main science target, Mount Sharp, which sits in the middle of the Gale Crater (click to enlarge) – Credit: NASA/JPL-Caltech

The rover’s shadow can be seen in the foreground above, and the dark bands beyond are dunes. Rising up in the distance is the peak of Mount Sharp (Aeolis Mons) at a height of about 3.4 miles, the base of which the Curiosity team will target as scientists believe it will hold clues to past environmental change.

The first colour image acquired from the surface by the Mars Hand Lens Imager (MAHLI) on the afternoon of the first day after landing (click to enlarge) – Credit: NASA/JPL-Caltech

In the distance, the image above shows the north wall and rim of the Gale Crater. The image is murky because the MAHLI’s removable dust cover is coated with dust blown onto the camera during the rover’s terminal descent.

Images taken without the dust cover in place are expected during checkout of the robotic arm in coming weeks (as the cover won’t be opened until around a week after landing).

Considering these images are the tip of what should become a very large iceberg, and Curiosity hasn’t yet properly woken up, there is so much promise and excitement surrounding Curiosity at the moment, and rightly so.

What fantastic times we live in :)

Source: NASA MSL

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Opportunity Rover provides HD Martian panorama

July 8, 2012

by yaska77

NASA recently released a panoramic image of the Martian landscape, taken by its Mars Exploration Rover Opportunity while it was stationary for four months of work during its most recent Martian winter.

This full-circle scene combines 817 images taken by Opportunity’s panoramic camera (click to enlarge) Credit: NASA/JPL-Caltech/Cornell/Arizona State Univ.

Compiled of 817 individual images at full resolution it is a sight to behold! The detail is astounding and about as close as any of us will ever come to experiencing “the red planet” first hand.

Click above to see a reduced size image (40% of the original) or the link below to download the full resolution monster (it’s a whopping 23096 x 7981 pixels!) and get more information direct from the NASA website.

Incredible image :)

Take me to Mars!

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I’ve a feeling we’re not in Kansas any more…

March 7, 2012

by yaska77

NASA has today released a remarkable image taken from the Mars Reconnaissance Orbiter using the High Resolution Imaging Science Experiment (HiRISE) camera.

The Martian twister casts a clear long shadow over the surface of the planet (click to enlarge) Credit: NASA/JPL-Caltech/Univ. of Arizona

HiRISE captured the image on 16th February this year (as the orbiter passed over the Amazonis Planitia region of northern Mars) and it clearly shows a whirlwind creating a twisting column of dust more than half a mile (800 meters) high!

A dust devil imaged on another world! Excellent! :)

The MRO has been examining Mars with six science instruments since 2006, a mission that has returned more data about “the red planet” than all other orbital and surface missions combined.

There are more than 21,700 images taken by HiRISE which are available on the instrument team’s website, which you can visit and peruse by clicking here.

And you can read more on the JPL website here.

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Astrophotographers capturing the heavens

March 7, 2012

by yaska77

Space pics are cool, no argument from us there. Since we started this blog we’ve brought you enough images to fill a photo album (and have slipped in quite a few of our own along the way).

A lot of people think you need in depth knowledge or mega expensive gear to take astro photos, but from our time spent in the “twitterverse” we’ve learnt that not only are there thousands of enthusiasts eager to get stuck in, but a multitude of talented people who do extraordinary things with a range of equipment!

The Moon

The first point of call for most night sky snappers is our beautiful Moon. We first started imaging the Moon using handhelds and camera phones (held up to the eyepiece of the telescope), but there are a variety of ways to get great images!

This waning Moon image shows great colour! (click to enlarge) - Credit: CJ5ive

If you don’t have a telescope, a DSLR can capture superb images all on its own. Twitter user CJ5ive used a Nikon D200 to grab this shot, and it looks great! Having a sturdy tripod helps remove any camera shake caused by the shutter opening, and with good seeing conditions you can get crystal clear shots.

Moon crater details are well defined in this iPhone 4s image (click to enlarge) - Credit: Phil Hammond

Don’t have a DSLR but have a telescope? With a steady hand Phil Hammond took this great example of afocal photography, using an iPhone 4s and a Sky-Watcher Evostar 102 Telescope. It can take a little patience to get it lined up, but you can get some great close up images.

Using a CCD camera you can capture superb detail, as demonstrated in this image of the Clavius crater (click to enlarge) - Credit: Paul Wharton

Want to get even closer? By using a CCD Camera (like a webcam) you can record video of your target and then stack the individual frames to bring out the details. Paul Wharton provided us with this great close-up of the Clavius crater on the Moon, taken using a Sky-Watcher 200P Telescope and a Trust webcam from eBay bought for 99p!

The Planets

Getting a close up look at the planets through a telescope can be awe inspiring, so imaging them can be very rewarding.

Using a webcam attached to a telescope you can get great images like this great view of Jupiter (click to enlarge) - Credit: John Mason

Jupiter is always a good target as through a telescope you can see clear details. John Mason‘s image shows Jupiter as a beautiful marble in space, captured using a Nexstar 6SE SCT Telescope and a SPC800 webcam (compiled using the stacking software Registax).

The superb clarity of this image of Jupiter (complete with two Moons) by Paul Wharton shows the beauty of the planet (click to enlarge) - Credit: Paul Wharton

The brilliant clarity of this image of Jupiter (complete with two Moons) highlights the beauty of the giant planet - Credit: Paul Wharton

Getting even closer to Jupiter this shot from Paul Wharton shows the different bands, the famous spot and two of Jupiter’s moons. You can even make out the shadow of a moon transiting the disc of the planet! This fantastic image was captured using a Sky-Watcher 200P Telescope and a Philips webcam.

Saturn is another must see through a telescope, and Jamey imaged it incredibly clearly (click to enlarge) - Credit: Jamey Erickson

There’s also nothing like the feeling of viewing the rings of Saturn with your own eyes. Very little compares to seeing it live (as it were) but the picture produced by Jamey Erickson comes awfully close! Created by stacking 40 light frames (with no dark frames) using a Celestron CGE-1100 SCT Telescope, a Canon 5D Mk II remote via MacBook Air, all guided with an iPad via SkySafariPro. That’s quite a setup!

Stars and a Nebula

Most of the time clouds are an astrophotographer’s nemesis, but they can help provide great atmosphere to a photo of the stars.

Cloud movement in a long exposure shot can create a beautiful ethereal feel when in front of a clear star filled background (click to enlarge) - Credit: John Mason

Orion is one of the most easily recognisable constellations in the night sky, and John Mason took this great shot of it framed by clouds using a Canon 1000D at 18mm on a 7 second exposure.

A similar shot of the fantastic Orion, with added International Space Station goodness (click to enlarge) - Credit: Sarah (purpleface)

The ISS frequently passes over the UK, an example of such a pass can be seen in Sarah’s image featuring Orion and the Hyades cluster above. Taken using a Canon 7D with the 18-55mm kit lens, 15 second exposure at ISO 400 (f/3.5). It also helps demonstrate just how far the space station travels across the sky in 15 seconds when moving at around 17,500mph.

It’s about 73 miles, the equivalent driving distance from Peckham in London to Dover by the English Channel!

Using a good zoom lens you can clearly capture the dusty shape of the Orion Nebula (click to enlarge) - Credit: Sarah (purpleface)

Using the same camera but this time a 90-300mm lens, Sarah’s shot of the Orion Nebula shows clear definition of its familiar shape, taken at an exposure time of 3.2 seconds, ISO 5000 (f/5.6).

Stacked shots taken via a telescope can provide far more detail than a single exposure alone, as this fantastic image demonstrates (click to enlarge) - Credit: Jamey Erickson

This jawdropping picture of the Orion Nebula from Jamey is the result of stacking 50 light frames and 50 dark frames (with the same equipment as his Saturn image above). Both images were stacked in Nebulosity and processed in PixInsight.

If you’d like to have a look through more of our contributor’s photographs, click on their name below and you’ll be transported to their snaps or Twitter feed. This is just a small example of what our friends on Twitter are doing, so they’re well worth a look through!

Come and join in the fun :)

Contributors

CJ5ive on Flickr
Phil Hammond on Twitter
Paul Wharton on Flickr
John Mason on Twitter
Jamey Erickson on Flickr
Sarah (purpleface) on Flickr

All images are copyright their respective owners

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