Posts Tagged ‘picture’

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Warming up to the Perseid show

August 11, 2012

by yaska77

As you probably know, the annual Perseid meteor shower peaks this evening (check our monthly guide for some more info) but because it was clear last night I set up my camera in the garden, more out of hope than expectation.

My history of trying to photograph meteors has been sketchy at best (see last years attempt here) but last night I was left grinning like a cheshire cat!

18mm focal length, f/3.5, 15 sec exposure at ISO1600 – This is easily the best meteor photo i’ve taken (click to enlarge) – Credit: Sky-Watching/A.Welbourn

I approach photography with a “try lots of settings and see” kind of attitude, and I’ve found what works initially may not look as good an hour later (light pollution quite often gives me orange skies if I don’t pay attention). Normally I wouldn’t have the ISO as high as 1600 for long exposure star shots, but anything lower was producing too much of an orange tint.

Still, I’m very pleased with the shot above, lots of stars, a bright Perseid meteor flash and it’s not too faded.  The other shots I caught weren’t as clear, but one did stand out as the meteor flashed by a cool little cluster that you can’t usually see with the naked eye (unless you’re lucky enough to have dark skies!)

Another Perseid meteor flashes past Brocchi’s Cluster (the upside down coat hanger!) in this cropped image from early on 11th August 2012 (click to enlarge) – Credit: Sky-Watching/A.Welbourn

Brocchi’s Cluster can be found within the imagined lines of the “Summer Triangle“, about a third of the way from Altair in a straight line to Vega.  It’s also known as the “Coathanger” for obvious reasons!

And so on to this evening.  My camera’s batteries are charging, the tripod is ready and the weather forecast is (currently) still favourable, so I’m planning a little trip out of town tonight to slightly darker skies. It’s building up to be a good show, and if I get any more images I’ll post them here!

And if you capture any photos of your own, please feel free to tweet them to us as we’d love to see them!

Enjoy the show :)

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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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ISS + Camera = Earth’s atmosphere

November 30, 2011

by tte-77

ISS Moon Earth skywatching

Earth's atmosphere - Credit: ISS Crew Earth Observations Experiment and Image Science & Analysis Laboratory/Johnson Space Center.

On 31 July this year Astronauts working onboard the International Space Station took this picture… simple but effective!

The picture was selected today by SPACE.com Staff as their ‘Image of the Day’. If you haven’t guessed already the picture shows the Earth’s atmosphere. Lying closest to the Earth’s surface is the orange-red troposphere, the brown transitional layer marks the tropopause (the upper edge of the troposphere) with the white/grey layer resting above it being a likely part of the stratosphere (containing noctilucent clouds according to NASA). The upper atmosphere composed of the mesosphere, thermosphere, and exosphere fades from blue to the blackness of space.

Here’s a thank-you to the ISS crew from all of us here at Sky-Watching!

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Hubble spies a beautiful butterfly

November 15, 2011

by yaska77

The bright clusters and nebulae of our night sky are often named after insects or flowers, and NGC 6302 is no exception!

What a massive wingspan! The Butterfly Nebula (NGC 6302) as imaged from Hubble in 2009 (click to enlarge) - Credit: NASA/ESA & Hubble SM4 ERO Team

With an estimated surface temperature of around 250,000°C, the central star of this particular planetary nebula is exceptionally hot, though its bright ultraviolet light is hidden from view by a dense ring of dust.

This amazingly detailed close-up image of the dying star’s nebula was captured by the Hubble Space Telescope soon after its upgrade in 2009.

This “Butterfly Nebula” lies about 4,000 light-years away in the constellation of Scorpius (the Scorpion).

Utterly beautiful and totally awesome :)

Source: NASA Astronomy Picture of the Day (13th November)

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Timelapse: Would you like to fly over planet Earth?

September 20, 2011

by tte-77

Imagine the view the astronauts onboard the ISS get to taste every day. The Earth from orbit – surely a beautiful image that will navigate its way safely into your memory and stay with you forever.

Well that’s great for astronauts and well they deserve it. Thankfully enough for us astronauts frequently aim their cameras toward Earth and their images are uploaded to a huge archive. James Drake, a science educator added 600 such images, stitched them together and produced this amazing HD timelapse movie.

From the Pacific Ocean, flying over the Americas before reaching sunrise over Antarctica this video is stunning even showing the network of night-time cities that inhabit Earth and lightning storms past the southern coast of Mexico.

Raw data was downloaded from NASA’s Gateway to Astronaut Photography of Earth which is a  Johnson Space Center project hosting the best and most complete online collection of astronaut photographs of the Earth which should keep interested followers busy until the ISS gets it’s new streaming HD video cameras in 2012.

View Gateway to Astronaut Photography of Earth here.

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