blt
Cartographer
Reged: 01/25/03
Posts: 637
Loc: Santa Cruz, Ca
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The Crab Nebula is one of the most amazing sights in the sky. But it's even more amazing if you look using an X-ray telescope. Hidden inside the Crab Nebula is an active neutron star and associated disk. Open the overlay to see the X-ray image from Chandra telescope. At the heart of the circular 'tornado' structure is a superdense neutron star. This neutron star is only twelve miles across and is revolving 30 times a sec.
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The Crab Nebula is the remnant of a supernova explosion that was seen on Earth in 1054 AD. It is 6000 light years from Earth. At the center of the bright nebula is a rapidly spinning neutron star, or pulsar that emits pulses of radiation 30 times a second.
Even more incredible, Chandra has recorded the pulsar disk changing over a period of time.
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The Chandra images in this collage were made over a span of several months (ordered left to right, except for the close-up). They provide a stunning view of the activity in the inner region around the Crab Nebula pulsar, a rapidly rotating neutron star seen as a bright white dot near the center of the images.
These images have been collected into an animation. Open up the movie placemark to see the animation on YouTube.
Edited by blt (08/26/07 09:37 PM)
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blobrana
Tourist
Reged: 06/27/06
Posts: 132
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Hum,
Excellent work.
BTW, I suspect this is really the famous `Mutara Nebula` depicted in the film Star Trek II: The Wrath of Khan
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dulce
Master Translator
Reged: 06/30/05
Posts: 1798
Loc: Spain
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Great one blt, the Crab Neula is one of my favourites, thank you! 
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jpwade
Builder
Reged: 03/12/06
Posts: 585
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Hello blt,
Here is an addition to your theme. It comes from a model i posted in the modeling and anotations forum. I touched it up a bit from the initial make and relocated it to the correct location.
the image below is from the post in the modeling fourm , it has multiple youtube animations positioned around the Nebula.
the overlay animations in that post are basically examples for SKY.
Check it out, i think you would enjoy.
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JP Wade - Click for Permissions
www.czmartin.com/jpw - Contact & list of models submitted to GE Forum
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blt
Cartographer
Reged: 01/25/03
Posts: 637
Loc: Santa Cruz, Ca
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Yes, thanks for the link. We see these images of supernova remnants but without the animation, it's hard to imagine just what they are. Your exploding animation does the job nicely. It you have some time, it would be cool if you could also do this for the spinning pulsar movie.
Edited by blt (09/16/07 09:43 AM)
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jpwade
Builder
Reged: 03/12/06
Posts: 585
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Hello blt,
Is the above placemark what you were thinking of, or should it be blended in with the nebula?
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JP Wade - Click for Permissions
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blt
Cartographer
Reged: 01/25/03
Posts: 637
Loc: Santa Cruz, Ca
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jpwade - you rule! This exactly what I was wishing I could do when I linked to the original movie. It should probably be blended in, but I think it works pretty well if you just set the transparency to about 50%.
Thanks!
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jpwade
Builder
Reged: 03/12/06
Posts: 585
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blt,
here are 2 more, animated pulsar overlayed on a static image of the the nebula.
I tried the transparency of the previous animation images and did not care for the ghost affect of the image borders from the smaller size mpeg frame over the large nebula image.
i am no film editor by far, thou i am learning some tricks here and there from these models.
I would think the size relationships of the nebula and the pulsar are way off, but the model gives a general concept of what is happening up there.
2nd example in follow up to this post
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JP Wade - Click for Permissions
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jpwade
Builder
Reged: 03/12/06
Posts: 585
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follow up from previous post:
this placemark is the animated pulsar overlayed on the animated nebula.
the pulsar in this placemark has been increased in size from the last model to enhance visualization.
enjoy
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JP Wade - Click for Permissions
www.czmartin.com/jpw - Contact & list of models submitted to GE Forum
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blt
Cartographer
Reged: 01/25/03
Posts: 637
Loc: Santa Cruz, Ca
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Really nice JP! This is pretty much perfect.
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