Sun  ID: 3435

Solar Dynamics Observatory (SDO): Data Collection Comparison

Solar Dynamics Observatory (SDO) will dramatically increase our ability to collect data about the Sun. This visualization compares the temporal and spatial resolution of SOHO/EIT with TRACE. SDO will enable TRACE-like image and temporal resolution over the entire solar disk.

This movie opens with a full-disk view of the Sun in ultraviolet light (195 angstroms) from SOHO/EIT using the traditional TRACE 'gold' color table. We zoom in on the active region on the western limb where the TRACE instrument is pointing and fade-in an inset of the higher-resolution TRACE data. To emphasize the comparison, the TRACE inset is moved aside (with a solid white border) revealing the matching EIT data view (enclosed in the faint white border). At this point, we step through the time series of data frames. In this movie, much of the TRACE imagery is collected at time intervals between 3 and 40 seconds. On the other hand, a new SOHO/EIT image is taken about every 12 minutes (720 seconds). The SDO Atmospheric Imaging Assembly (AIA) will take full-disk solar images at four times the SOHO/EIT spatial resolution, a whopping 4096x4096, and at least 70 times the temporal resolution, 10 seconds or better per image. This creates a data rate over 1000x higher than SOHO/EIT. It is roughly equivalent to TRACE spatial and temporal resolution, but over the entire solar disk.

Visualization Credits

Tom Bridgman (GST): Lead Animator
William D. Pesnell (NASA/GSFC): Scientist
Please give credit for this item to:
NASA/Goddard Space Flight Center Scientific Visualization Studio

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Data Used:
SOHO/Extreme-UV Imaging Telescope (EIT)/195 Filter also referred to as: SOHO/EIT 195
NASA and ESA - 2003-Oct-25T00:00:26 - 2003-Oct-27T17:59:32
TRACE/Optical Telescope/195 Angstroms
2003-Oct-25T00:00:26 - 2003-Oct-27T17:59:32
Note: While we identify the data sets used in these visualizations, we do not store any further details nor the data sets themselves on our site.

This item is part of these series:
SDO Pre-launch
The Sun
SDO - Visualizations

GCMD >> Earth Science >> Sun-earth Interactions >> Solar Activity
GCMD >> Earth Science >> Sun-earth Interactions >> Solar Activity >> Solar Active Regions
GCMD >> Earth Science >> Sun-earth Interactions >> Solar Activity >> Solar Ultraviolet
SVS >> Solar Dynamics Observatory
NASA Science >> Sun
SVS >> Extreme Ultraviolet Imaging
SVS >> EUV Imaging

GCMD keywords can be found on the Internet with the following citation: Olsen, L.M., G. Major, K. Shein, J. Scialdone, S. Ritz, T. Stevens, M. Morahan, A. Aleman, R. Vogel, S. Leicester, H. Weir, M. Meaux, S. Grebas, C.Solomon, M. Holland, T. Northcutt, R. A. Restrepo, R. Bilodeau, 2013. NASA/Global Change Master Directory (GCMD) Earth Science Keywords. Version