Sun  ID: 3794

STEREO in Stereo: April 8, 2007

Full Disk View: Image sequences taken April 8-9, 2007 by the EUVI telescopes on the two STEREO spacecraft (STEREO-B, left eye; STEREO-A, right eye). At this time the spacecraft were about 3.7 degrees apart. These images show the Sun in extreme ultraviolet light at a wavelength of 171 angstroms, highlighting parts of the Sun's atmosphere (the corona) at about one million degrees C. Note the bright active regions near the Sun's equator and the dark "coronal holes" at the north and south poles. These are features of the Sun's magnetic field. Coronal holes are areas where the magnetic field opens out to allow material to flow out into the solar system, while active regions are made up of strong, closed fields which bottle up hot plasma (ionized gas) close to the surface. This image was taken near the minimum in solar activity, so there are few active regions.

Closeup View: Image sequences taken April 8-9, 2007 by the EUVI telescopes in the SECCHI imaging suites on the two STEREO spacecraft (STEREO-B, left eye; STEREO-A, right eye). At this time the spacecraft were about 3.7 degrees apart. Here we see a close up of solar magnetic active regions, flickering as they rotate out of sight around the sun. These are areas where the Sun's strong magnetic field bottles up million degree C plasma (ionized gas) low in the corona (the Sun's outer atmosphere). These images are taken at a wavelength of 171 angstroms (0.00000171 cm) in the extreme ultraviolet.

Note for Large Displays: These movies are produced using images from STEREO where the angle between the spacecraft is getting larger than the optimum angle for stereo separation. While they work well on small displays, large-screens and projection systems can introduce significant distortions in the stereo effect which the audience may find uncomfortable. When doing large-screen projection, you may need to adjust the left-right image alignment for optimum viewing. However, this does not guarantee a distortion-free result.


Visualization Credits

Tom Bridgman (GST): Lead Animator
Eric DeJong (NASA/JPL CalTech): Animator
Jeffrey R. Hall (NASA/JPL CalTech): Animator
Paulett Liewer (NASA/JPL CalTech): Animator
Shigeru Suzuki (NASA): Animator
Therese Kucera (NASA/GSFC): Scientist
William T. Thompson (ADNET): Scientist
Please give credit for this item to:
NASA/Jet Propulsion Laboratory and NASA/Goddard Space Flight Center Scientific Visualization Studio

Short URL to share this page:
https://svs.gsfc.nasa.gov/3794

Mission:
STEREO

Data Used:
STEREO/Extreme UltraViolet Imager (EUVI)/171 Angstroms
2007-04-08T00:04 - 2007-04-09T23:59
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 this series:
STEREO Post-Launch

Keywords:
SVS >> HDTV
SVS >> Magnetic Fields
GCMD >> Earth Science >> Sun-earth Interactions >> Solar Activity >> Solar Active Regions
GCMD >> Earth Science >> Sun-earth Interactions >> Solar Activity >> Solar Ultraviolet
GCMD >> Earth Science >> Sun-earth Interactions >> Solar Activity >> Sunspots
GCMD >> Location >> Corona
SVS >> Stereo Display
SVS >> STEREO
NASA Science >> Sun

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 8.0.0.0.0