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Originally posted by AmberLeaf
reply to post by Pauligirl
That doesnt explain why its visible for 10 minutes. That would mean the cosmic rays would have to stop for ten minutes
Sometimes you'll see a cosmic ray seem to persist in the web images for two or more frames. This is because we lose a certain percentage of the data coming down from the spacecraft. In LASCO such losses appear as square blocks in the image. The software which puts the images up on the web will fill in these blocks from the last good image, and if there's a cosmic ray in that block from the previous image, it will appear in this image as well. The way to check for this is to look at the raw data files, which are also available on the web through the SOHO catalog interface.