Posts Tagged ‘space’

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Astronomy Events – June 2012

June 1, 2012

by yaska77

The rains of early May soon departed but sunnier days ended with hazy skies. So we’ve not seen much at all recently to be honest! Ever the optimists though, below you’ll find some interesting upcoming Astronomy Events for June where we’ve tried to list something of interest to everyone to keep you all watching the skies!

Don’t miss the special event from 5th to 6th June, there won’t be another in our lifetime!

Sunday 3rd June – The Moon is at Perigee at a distance of 358,480 km

Monday 4th June – It’s a Full Moon tonight, sometimes known as the Flower Moon, Strawberry Moon or Rose Moon

The Full Moon can look beautiful but its brightness can be a problem for astronomers, and make it awkward to photograph! (Click to enlarge) – Credit: Sky-Watching/A.Welbourn

Tuesday 5th into
Wednesday 6th June –
Venus is at Inferior Conjunction and will transit (cross in front of) the face of the Sun. The last such transit was on 8th June 2004, but if you miss this one the next won’t be for another 105 years!

“Depending on where you live worldwide, the transit of Venus will happen on June 5 or 6, 2012. If you live in the world’s Western Hemisphere (North America, northwestern South America, Hawaii, Greenland or Iceland), the transit will start in the afternoon hours on June 5

Shown above at 04:00 UTC (05:00 GMT) at sunrise in the UK, Venus will only transit the Sun’s disc for about another 50 minutes before it’s all over for another 105 years! (click to enlarge) – Credit: Sky-Watching/Stellarium

In the world’s Eastern Hemisphere (Europe, Africa, Asia, Australia or New Zealand), the transit will first be seen at sunrise or in the morning hours on June 6″ (via EarthSky)

The next transit of Venus will be on December 11, 2117

Image of the Transit of Venus captured in 2004 – Credit: Jan Herold

Remember, observing the Sun can be dangerous if you don’t have the correct gear like a solarscope, certified solar viewing filters or a pair of eclipse viewing glasses. Don’t look directly at the Sun or you will damage your eyes and your equipment

Monday 11th JuneThe International Space Station (ISS) will be visible over British evening skies towards the middle of the month. Usually making a couple of visible passes during the evening, programs like Stellarium can track the orbit of the ISS and show you where and when it’s going to rise

Alternately, you can visit a site like Heavens-Above.com, enter your location using the map and it will list the time of every visible pass from your where you are over the next 10 days. Great eh!?

A long exposure shot of the ISS passing will create a bright white streak across a clear starfield background (click to enlarge) – Credit: Sky-Watching/A.Welbourn

Saturday 16th June – The Moon is at Apogee (405,790 km) the farthest it will get from the Earth on its current orbit

Sunday 17th JuneThis is the time of year to be looking for noctilucent clouds, which sometimes appear low down in the northwest (after sunset) and northeast (just before sunrise)

These clouds are in the upper atmosphere and are usually too faint to see, becoming visible only when illuminated by sunlight from below the horizon while the lower layers of the atmosphere are in the Earth’s shadow

Noctilucent clouds as captured over Sweden (click to enlarge) – Credit: P-M Hedén

Tuesday 19th JuneNew Moon which rises just before the Sun

Thursday 21st June - After sunset Mercury will be at its highest in the sky and is joined by a thin crescent Moon below to its left.   If you’ve got a low horizon just north of west, look out for “earthshine” illuminating the dark side of the Moon

Earthshine happens when light reflected from the surface of the Earth illuminates the dark side allowing us to see details (click to enlarge) – Credit: Sky-Watching/A.Welbourn

Monday 25th JuneMars appears close to the waxing crescent Moon this evening, with Saturn following not far behind. Possibly a good opportunity for a wide angle starfield photograph while the Moon isn’t too bright to spoil a longer exposure? If it’s clear i’ll give it a go!

Look just south of west around 22:30 BST to find the waxing crescent Moon near Mars (click to enlarge) – Credit: Sky-Watching/Stellarium

Thursday 28th June – The planet Mercury is in Inferior Conjunction

Friday 29th June – Moon is at Perigee (367,315 km)

Planets visible this month:

Mercury
Venus
Mars
Saturn
Jupiter
Uranus
Neptune

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!

To make it easier to find this list of astronomical happenings you can also locate it in the “Monthly Guide” section in the menu bar to the right. Handy! :)

Guide images created with Stellarium

Archive:
Astronomy Events – May 2012
Astronomy Events – April 2012
Astronomy Events – March 2012

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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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Astronomy Advent Calendar – 7th December

December 7, 2011

by yaska77

The Chandra X-Ray observatory provides the latest image in our ongoing astronomy advent calendar count-down.

Space continues to give us weird and wonderful sights. We love this stuff!

Day 7

Astronomy Advent Calendar 7th December - This SNR resembles a smoke filled bubble! (click to enlarge) - Credit: NASA/CXC/Rutgers/K.Eriksen et al & DSS

Pictured above is a Chandra image of the SNR (supernova remnant) of Tycho, a white dwarf star in our own galaxy in the constellation Cassiopiea (visible from the Northern Hemisphere).

It’s expanding out from the blast location at thousands of kilometers per second (measured at around 55 light years across), all from an explosion that gave off more energy than our Sun will over its entire life!

Fascinating :)

View yesterday’s image

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Astronomy Advent Calendar – 6th December

December 6, 2011

by yaska77

Where are the days going!? Day 6 and another image in our advent calendar count-down, and today’s is one of our own snaps, taken from my back garden using my own ‘scope and camera.

Conducting your own astro tour with a telescope (and some planetarium software) from your own garden is a great way to learn about stars and the solar system. And nothing beats seeing this stuff with your own eyes!

Day 6

Astronomy Advent Calendar 6th December - Jupiter has 64 named moons but most are under 10km in diameter (click to enlarge) - Credit: Sky-Watching/A.Welbourn

Jupiter is a great planet to use to help engage kids in astronomy, as with a good pair of binoculars you’ll be able to point out the moons and with a small telescope surface features should be visible.

This single shot (short exposure) of Jupiter also includes four of it’s larger moons; the three to the left are Callisto, Ganymede and Io, and the one to the right is Europa.  NASA recently annonced the possibility of there being liquid water under the surface ice of Europa, making it a prime candidate for the possibility of life existing somewhere else other than the Earth in this solar system.

Fascinating stuff :)

View yesterday’s image

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Astronomy Advent Calendar – 5th December

December 5, 2011

by yaska77

Todays fifth advent calendar count-down image ventures much farther away from home than our previous pictures have managed. Taken by the Hubble Space Telescope, this image is the first of what I’m sure will be many to feature in this count-down.  There’s still plenty of days still to come!

Day 5

Astronomy Advent Calendar 5th December - Hanny’s Voorwerp looks like a ghostly slimer (click to enlarge) - Credit: NASA/ESA/W. Keel (University of Alabama) and the Galaxy Zoo Team

In 2007 Dutch High School teacher Hanny van Arkel spotted this ghostly cosmic blob while participating in the online Galaxy Zoo project.   Named Hanny’s Voorwerp (Hanny’s Object in Dutch), it appears as a solitary green island near to a normal-looking spiral galaxy (IC 2497)

Astronomers have since found that Hanny’s Voorwerp is the only visible part of a 300-light-year-long gaseous streamer stretching around the galaxy. The green section is only visible because a beam of light (powered by a black hole driven quasar) is illuminating it from the nearby galaxy’s core

Looks like a giant ghostly slimer in space :)

See you tomorrow!

View yesterday’s image

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