Summary of LASCO/EIT
What is LASCO?
What is EIT? (external link)
RealTime Movies (SOHO Movie Theater)
Database Queries and Download
CME Queries (New!)
FITS Header Keywords
Coronal Mass Ejections
LASCO Sky Map
LASCO C3 Planet transits (via Sungrazer)
Latest Site Updates
Team and Operations
LASCO/C1 at MPAe (Germany)
LASCO at LAS (France)
Solwind Images and CMEs
SOHO Home page
SOHO and SOHO Instruments
Other Solar Satellites and Observatories
LATEST LASCO/SOHO REAL TIME IMAGESWe maintain an archive of the most recent ~12 days of LASCO data as gif images in three different resolutions: large (1024x1024), medium (512x512), and small (256x256). We can't always promise these are up-to-date. Sometimes the processing crashes and sometimes there are data gaps. We will always try to fix any errors at our end as soon as we become aware of them.
The most recent real-time images from each of the telescopes, C2, C3, and EIT. These images are being placed onto the web as soon as they have been received by the work station at the EOF (usually within a few minutes). Some playback images are also processed by the EOF workstation and placed onto the web in the same manner, however the playback data usually arrive at least 4 hours after the data have been collected by the instrument.
Note that all of these latest images are "as received" data and have had no calibrations applied to them. The data frequently show transmission errors as blocks of missing information. Ragged edges at the corners of the field and in the occulted area are due to image blocks that are not transmitted to save transmission time. These blocks are outside of the field of view of the instrument and so don't contain any solar information.
Only minimum processing has been applied to these images because their primary purpose is to verify instrument status. If they are "normal" coronal images (ie not calibration images such as darks, calibration lamp, etc), then they have been oriented to place the solar north at the top of the image and the east limb of the Sun to the left. The image intensities have been scaled in a constant way (for each telescope) to show the corona. For C1, we subtract the continuum image to show the FeXIV of FeX corona. For C2 and C3, we subtract the background image to show the K-coronal structures.
In addition to the most recent images, a list of images, received at the EOF, is available on the web. The list is edited to be only the most recent 10 days. Earlier image header files may be viewed.
The NRL processing logs are more complete than the EOF realtime logs but reflect daily and monthly processing for the data archive rather than realtime. Since these are a minimum of 33Mb files, we recommend downloading them rather than viewing them in your browser. (Shift-left click works for most browsers).
Level-0.5 (Images older than ~2 months) (WARNING... this file is almost 150MB! We recommend you right-click this link and select the "Save link as..." option)
Quick-Look (Images older than ~1 day) (Also a huge file -- see above warning.)
Additionally, realtime images in the form of gifs are available from the realtime images section of the main SOHO website.
Other solar images that might be of interest can be found in the following list and in references contained therein: