Important notice about the deactivation of the STEREO ftp
Important notice about the STEREO redirects
Important notice about STEREO Behind
Welcome to the STEREO Learning Center
Image artifacts - Corrupted images
On rare occasions, the SECCHI image processor onboard STEREO becomes
overloaded, and produces corrupted images. Generally, these take the form of
images from one telescope processed as if they were from another telescope.
Because the images from the Heliospheric Imager (HI) telescopes are built up
from a large number of exposures added together, this sometimes results in
"double exposures", where data from several telescopes appear in the same
image. Instances of large numbers of corrupted images are usually tracked on
Coordinated Observations Calendar
Below are some examples of corrupted images.
|Corrupted COR1 image incorporating data from the HI2
||Corrupted HI1 image incorporating data from both the COR1 and
Image artifacts - Blank images
Another error which occasionally happens on board the spacecraft is to take an
image without opening the shutter. This generally results in a completely
blank image. Some coronagraph images built up from several exposures may show
features in the corners of the image, as in this example.
|COR1-B image taken May 29, 2009, formed from two blank
exposures, and one partial exposure with the shutter left open during
Back to image artifacts page.
Last Revised: Thursday, 15-Sep-2016 11:41:36 EDT
Responsible NASA Official:
Webmaster: Kevin Addison