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SECCHI Time-Elongation Plots
Below are time-elongation plots built up from SECCHI running difference
images, known colloquially by some as "J-plots". Coronal mass ejections
(CMEs) are seen as diagonal bright and dark bands running from lower-left to
upper-right. The steepness of the band reflects the speed of the CME.
Occasionally one can also see planets or bright stars as streaks in the
plots.
These plots are built up from the SECCHI beacon images. The STEREO space
weather beacon telemetry mode is a very low rate, highly compressed data stream
broadcast by the spacecraft 24 hours per day. These data are used for space
weather forecasting. Because of the large compression factors used, these
beacon images are of much lower quality than the actual science data.
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COR2 Ahead, East limb



Plots revised: Thursday, 01-Jun-2023 23:24:08 UTC
COR2 Ahead, West limb



Plots revised: Thursday, 01-Jun-2023 23:24:08 UTC
HI Ahead, West limb

Plot revised: Thursday, 01-Jun-2023 22:07:35 UTC

Plot revised: Thursday, 01-Jun-2023 23:32:06 UTC
This page should automatically update every 5 minutes. Otherwise, use your
browser's "reload" button to get the most recent plot.
The data on this page include telemetry collected by the following
organizations:
- NASA Deep Space Network
- National Institute of Information and Communications Technology: Koganei,
Japan
- Amateur station DL0SHF, Kiel-Ronne, Germany
- AMSAT-DL/Bochum Observatory, Germany
- Johns Hopkins University Applied Physics Laboratory, Laurel, MD, USA
- Korean Space Weather Center, Jeju, South Korea
We would also like to acknowlege the past assistance from the following
organizations:
- Rutherford Appleton Laboratory: Chilbolton, UK
- Centre National d'Etudes Spatiales: Toulouse, France
In addition, we wish to acknowlege
- Amateur station KA9Q, Phil Karn, for writing and donating the decoding
software used at the ground stations.
- NOAA Space Weather Prediction Center for organizing and scheduling the
ground station network.
Last Revised: Wednesday, 08-Dec-2021 16:01:37 UTC
Responsible NASA Official: ![[email address: Therese.A.Kucera<at>nasa<dot>gov]](/img/kucera_email1.jpg)
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