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Tuesday, August 23, 2011

 

Comet Elenin in STEREO H1B (August 19 and 20)

Elenin passes through the image field of view of the STEREO H1 Behind imager on August 19. Click to embiggen. Image processed from NASA/STEREO raw images using ImageJ. Inverted image, dark lines are imaging artifacts.Elenin passes through the image field of view of the STEREO H1 Behind imager on August 20. Click to embiggen. Image processed from NASA/STEREO raw images using ImageJ. Inverted image, dark lines are imaging artifacts.


I've done something different here. I've zoomed and cropped these images of Comet Elenin from the STEREO H1B imager in order to capture the tail of Elenin. Presenting the images this way makes the tail easier to see. On the 19th a solar flare passed over Elenin and the tail flared as well and was twisted about. The weird white patches in the image of the 19th are artefacts of the background subtraction process I use. It looks better in animation. Here's the AVI animation of the August 19 images (1 Mb) and the AVI animation of the August 20 images (1 Mb).


Comet Al has a better animation of the August 19 event here.

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Comments:
Hi Ian:
Congratulations on your blog, and your information always updated.

I wanted to ask about this: ...

"possibly STEREO's COR2 coronagraph as well between August 20 and September 1"
http://stereo.gsfc.nasa.gov/gallery/item.php?id=selects&iid=154

Have you an image?

I'm a little confused, I rinse it be if your COR2 In what I look for?

Cor2B = http://secchi.nrl.navy.mil/sccimages/index.php?subdir=Cor2_B&nothumb=0

Cor2A = http://secchi.nrl.navy.mil/sccimages/index.php?subdir=Cor2_A&nothumb=0

Ahead COR2B, Behind Cor2B From :
Http://stereo.gsfc.nasa.gov/cgi-bin/images


Angelic.
 
COR2_B, haven't had a chance to download the images yet to check.
 
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