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Flight through the Coronal Loops
Here we illustrate the potential benefits of the 3-D views of the Sun which STEREO will provide. Starting with a simple 2-D EIT ultraviolet image from SOHO, we transition to a 3-D model and move through the coronal loops which are constructed along solar magnetic fields. The solar model is constructed from magnetogram data collected by SOHO/MDI. Because we do not see the full solar surface at any one time, the magnetograms collected over the course of a solar rotation are processed through a time-evolving solar surface model to provide a snapshot of the surface at a fixed time. The resulting magnetogram is then processed through the Potential Field Source Surface (PFSS) model. Coronal loops are visible at the higher temperatures of ultraviolet light, in this case, 195 Ångstroms, the filter wavelength of SOHO/EIT. For this version, we color the coronal loops green for ready comparison to the EIT 195 Ångstrom imagery using the EIT 'standard color table'.

Transition from a 2-D solar image to a 3-D solar model and take a flight around the Sun, close to the solar surface.    Transition from a 2-D solar image to a 3-D solar model and take a flight around the Sun, close to the solar surface.
Duration: 30.0 seconds
Available formats:
  320x240 (30 fps) MPEG-1   4 MB
  640x480 (30 fps) MPEG-1   15 MB
  720x480 (29.97 fps) MPEG-2   25 MB
  320x240     JPEG         15 KB
  720x480 (29.97 fps) Frames (Main)
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This is a stereo version of the movie. Note the stereo appearance is not that effective because of the predominant green coloration of the movie.<img src='/images/stereoicon.png'>    This is a stereo version of the movie. Note the stereo appearance is not that effective because of the predominant green coloration of the movie.
Duration: 30.0 seconds
Available formats:
  320x240 (30 fps) MPEG-1   2 MB
  640x480 (30 fps) MPEG-1   28 MB
  720x480 (30 fps) MPEG-2   27 MB
  720x480 (29.97 fps) Frames (Left)
  720x480 (29.97 fps) Frames (Right)
  320x240     JPEG         72 KB
  160x80       PNG           32 KB
  80x40         PNG           8 KB
  720x480 (29.97 fps) Frames (RedCyan)
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A 2-D view of the Sun as seen from SOHO/EIT.    A 2-D view of the Sun as seen from SOHO/EIT.

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  320 x 240         JPEG 14 KB


A view of the coronal loops generated by the PFSS model for this time frame.    A view of the coronal loops generated by the PFSS model for this time frame.

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  320 x 240         JPEG 48 KB


Push-in to the solar surface, focused on a small dipolar active region, AR 9731.    Push-in to the solar surface, focused on a small dipolar active region, AR 9731.

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  320 x 240         JPEG 67 KB


Rotating our view to the solar surface, we begin our flight through the upper regions of the solar atmosphere.    Rotating our view to the solar surface, we begin our flight through the upper regions of the solar atmosphere.

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  320 x 240         JPEG 68 KB


We continue the flight throuh the loops, moving along the same heliographic latitude.    We continue the flight throuh the loops, moving along the same heliographic latitude.

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  320 x 240         JPEG 76 KB


We pass over another group of active regions.    We pass over another group of active regions.

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  320 x 240         JPEG 77 KB
  160 x 80           PNG 26 KB
  80 x 40             PNG   6 KB


Finally ending our tour back at AR 9731.    Finally ending our tour back at AR 9731.

Available formats:
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  320 x 240         JPEG 70 KB

Animation Number:3286
Animator:Tom Bridgman (SVS) (Lead)
Completed:2005-10-20
Scientists:Michael Kaiser (NASA/GSFC)
 Therese Kucera (NASA/GSFC)
 Don Michels (NRL)
 Russ Howard (NRL)
Instruments:SOHO/EIT
 SOHO/MDI
Data set:Potential-Field Source-Surface
Data Collected:December, 2001
Series:STEREO Pre-launch
Keywords:
SVS >> Coronal Loop
SVS >> Solar Ultraviolet
SVS >> Sun
GCMD >> EARTH SCIENCE >> Sun-earth Interactions >> Solar Activity
GCMD >> EARTH SCIENCE >> Sun-earth Interactions >> Solar Activity >> Solar Ultraviolet
SVS >> Stereo Display
 
 
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