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NASA Image of the Day
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| The latest NASA "Image of the Day" image. |
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Remnant of a Supernova
Vital clues about the devastating ends to the lives of massive stars can be found by studying the aftermath of their explosions. In its more than twelve years of science operations, NASA's Chandra X-ray Observatory has studied many of these supernova remnants sprinkled across the galaxy. The latest example of this important investigation is Chandra's new image of the supernova remnant known as G350.1-0.3. This stellar debris field is located some 14,700 light years from the Earth toward the center of the Milky Way. Evidence from Chandra and from ESA's XMM-Newton telescope suggest that a compact object within G350.1+0.3 may be the dense core of the star that exploded. The position of this likely neutron star, seen by the arrow pointing to "neutron star" in the inset image, is well away from the center of the X-ray emission. If the supernova explosion occurred near the center of the X-ray emission then the neutron star must have received a powerful kick in the supernova explosion. Data suggest this supernova remnant, as it appears in the image, is 600 and 1,200 years old. If the estimated location of the explosion is correct, this means the neutron star has been moving at a speed of at least 3 million miles per hour since the explosion. Another intriguing aspect of G350.1-0.3 is its unusual shape. Many supernova remnants are nearly circular, but G350.1-0.3 is strikingly asymmetrical as seen in the Chandra data in this image (gold). Infrared data from NASA's Spitzer Space Telescope (light blue) also trace the morphology found by Chandra. Astronomers think that this bizarre shape is due to stellar debris field expanding into a nearby cloud of cold molecular gas. The age of 600-1,200 years puts the explosion that created G350.1-0.3 in the same time frame as other famous supernovas that formed the Crab and SN 1006 supernova remnants. However, it is unlikely that anyone on Earth would have seen the explosion because of the obscuring gas and dust that lies along our line of sight to the remnant. These results appeared in the April 10, 2011 issue of The Astrophysical Journal. Image Credits: X-ray: NASA/CXC/SAO/I. Lovchinsky et al; IR: NASA/JPL-Caltech
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The News
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Written by Liz Gleeson
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Friday, 19 September 2008 17:51 |
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Greetings all
A great night had at Garys on Saturday night just gone, with a great turnout!! Great to have Charles and Ken back, also Matt and Steve, and big welcome to Edward and his family, and to Rex, who babysat my scope for lot of the night, and made some running repairs to it. : )
Sky was clear with lots seen. Murray had his big scope set up, and we got some great views of planets, including the elusive Uranus and Neptune, with galaxies, globs, good doubles stars etc. Good objects also seen through Garys, and mine, and Ed had some nice Jupiter views as well.
Ed is looking at setting up a website for us, and we all agreed it was a fabulous idea. Thank you Ed.
Lots of chatting as usual, and also a bucket load of meteors seen, I reckon I saw at least 10, with others seeing different ones in various directions. A lot were short and bright and showing up around the southern area. Was a latish night - i got home at midnight, but Gary, Murray, Greg, Matt and Rex were still viewing/imaging. Sorry David W, I should have rang/left message for you to come out after work, I will next time. Sue, Alex and Barb - you missed a good night, we missed yous there.
Now, this Saturday night 9/8 is at Pallaranda (3 Mile Creek, clear area where the loos are) for planets/Moon for the public - try and spread the news to let people know. I will ring WIN news today, and I think David B was ringing 4TO, anyone else wanting to contact another media source, please do so. Night will start about 7ish when dark, so we will all be arriving and setting up from 6pmish. Fingers crossed for clear skies. Forgot to say that I have had email from David Ellis, who is down is Bairnsdale, and says big hi to everyone - he has been doing a bit of viewing and imaging as well, and enjoying the dark southern skies down there.
cheers all.
Liz |
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Last Updated on Tuesday, 11 November 2008 22:59 |
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Written by Liz Gleeson
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Friday, 19 September 2008 17:48 |
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Hello felllow members A meeting was held at Garys at Bluewater on Saturday night 5/7, and was a good success, with about ..... maybe 15 people at a given time. Weather held out, overall, though quite a few clouds at frequent intervals, but still, quite a few targets seen and enjoyed. Lots of chatting filled the gaps when cloud cover obstructed views. Some good chatters around : )
People were packed up by about 11pm, though chatting continued until after 11.30 ish.
Gary has put in a large concrete area beside the house, so easy to set up on, instead of driving around the back, dodging septics and trees. We had our cars and scopes up on the concrete easily.The main worry now, is to drive into the right driveway!!
Scopes included Daves10" Dob, Garys big impressive Meade, The Howards Newtonian (? 8") which was tracking well over the night, and my troublesome 10" Dob. Still trying to finetune a few teething problems with mine, although ..... a young girl (? Willow) said that Omega Centauri looked better in my scope, compared to Garys. Sorry Gary - i'm the one writing this : ) Lots of good targets seen including the usual Omega Centauri, Mars, Jupiter, Saturn, a few galaxies, Ring Nebula and more. Dave and Greg whizzed through the Messier objects in Saggitarius. Highlight of night was probably NGC 4945 - a spiral galaxy in Centaurus which showed up as a bright streak, and was a pleasant surprise. Gary was taking pics through his scope, and I took a few with camera on tripod - my new Canon 450D had a close encounter with the concrete, but luckily OK.
Murray unable to attend on Saturday night, though hear he has his mirror back, and a homemade tracking platform which we all eager to see!!!! Our best to MaryAnne.
Camping night at Burdekin on 26th July .... at Macrosson ( let me know if thats wrong) - members planning to leave about 2pm. The Howards are heading out this weekend for a look, make sure there are not too many 'grey nomads' set up etc. Please ring the numbers on the previous Astronomy letter if you want to meet up and travel together ... convoy style. Alas, I wont be able to go camping on 26/7 as thought it was Aug 2nd : (
A few other regulars were missed on the night - Charles, Ken, Roy and Richard - hope to see you all next time, and to all others interested, please join us.
Cheers all, and clear skies
Liz |
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Last Updated on Tuesday, 11 November 2008 22:55 |
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September 8th Viewing night |
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Written by Liz Gleeson
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Friday, 19 September 2008 17:45 |
Hello fellow observers
This may be the last 'newsletter' now that the website is up and going. I could incorporate it into a 'personal blog' on the website, or keep on sending it out, let me know.
The website is coming on well,growing and developing with Ed at the helm http://astronomy.abigbluesky.com/ eachtime I visit there is something new and exciting. Cheers for our webmaster. clapclapclap. Please join and drop aline.
We held our 2nd viewing night at Garys on Saturday. The previous Saturday was clouded out, though still about 6 of us there chatting, and getting occasional glimpses of Jupiter, and some double stars. Saturday evening started with some smoke and cloud that luckily cleared, though we had about an 8 day old Moon.
Some great sights seen, and I probably had the best night viewing out of my 10" dob since purchase. Venus, Mercury and Mars formed a great triangle setting in the West. Jupiter again was popular, but also lots of double stars - spurred on from Rex last week. Albireo of course, which is the best double in the sky, designated 'bic' by Lex, was brilliant. Also other doubles including Alpha Centauri, Alpha Crucis, Gamma Delphinus,Gamma Crucius, and more.
Gary had a lovely view of 2 sets of small doubles inclu Gamma Delp in FOV. Comet Mcnaught A1 was seen in binoculars, but elusive to the scopes, though Sue and I gave it a try. Moon also was beautiful, despite emitting too much light .... The Howards had some lovely views, and were naming the prominent features. I think 'crater of the night' was Posidonius, just off Mare Serenitatis.
Also seen were M 56, M57,Andromeda Galaxy, beautiful red carbon star near Beta Crucius .... and much more. Andy was also searching for the South Celestial Pole, and was aided or misguided by my help : ) I actually havent done that for ages... that is... finding South Polar region, and was fun. I do think that snazzy scope was leading him astray ... .and I was pointing to where I thought it was at mid left of Octans. This will also help whem I try some star trails around South polar region.
Time went very quickly, and when I told Barb that it was 11.15,all were surprised, and gradually packed up, as some cloud cover had come over, although had disappeared by time all packed up and leaving at midnight!!
ublic night at The Strand tonight .... but probably cancel due to cloud cover/drizzle, shame, unless clears this arv. BIG congrats to Rex and his 'wife' on their marriage at the weekend, we were all thinking of you Rex, hope all went well. Next observing night on 27th September - on newsletter we had it at Woodstock ..... few of us thought Garys woud be fine, and save the travel. Anyone prefer Woodstock??
Cheers all
Liz |
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Last Updated on Tuesday, 11 November 2008 22:50 |
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