LASCO Movies

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Solar Corona

C3 Coronagraph Movie 22-27 December 1996 Image Cadence ~50 minutes between frames

C2 Coronagraph Movie 22-27 December 1996 Image Cadence ~30 minutes between frames

C3 Coronagraph Movie of January 15, 1996 CME. Image cadence about 6 minutes.

C2 and C3 Coronagraph Movie of the February 3, 1996 CME. (42 frames)

C3 Movie of the wobble of the F-corona (Zodiacal light) throughout the year. This wobble is due to the difference between the plane of the solar equator and the plane of symmetry of the F-corona. To view the MVI file you need to download one of the IDL movie routines, e.g. MVIPLAY.PRO. You will also need the IDL software, a commercial product from Research Systems, Inc.


Inflows

Inflows Seen in C2

These are running difference movies where each frame has the previous frame subtracted from it. This technique is useful in detecting changes in a scene.


Running difference images, showing changes (proper motions):

Oct. 18 -19, 1999: collapsing loops at the east* limb

Dec. 29, 1999: major stream of collapsing loops at the east limb

Feb. 6-7, 2000: converging inflows at the west limb (a recurrence
                 of the Dec. 29, 1999 stream)
                 
Sep. 27, 2000: west-limb inflows changing from points to loops as
               they move across the C2 field of view (part of the
               stream described in Fig.2 of our November 20, 2001
               ApJ Letters paper)

Sep 27, 2000 - 553kB MPG

Oct 18, 1999 - 703kB MPG

Feb 6-7, 2000 - 421kB MPG

Dec 29, 1999 - 883kB MPG

Sharpened Ratio Inflow Movies

Oct. 24, 1999: west-limb images showing a "sinking column"
               with a long dark (evacuated) tail (the same stream
               shown on Dec. 29, 1999, and Feb. 6-7, 2000 in 
               running difference images)
               
Jan. 14, 2000: west-limb images showing dark inflow tails that
               are caught up in the fight between a small CME
               and the long-lived inflow stream (seen in the
               Oct. 24, 1999; Dec. 29, 1999; and Feb. 6-7, 2000
               movies)

Feb. 08, 2000: west-limb inflows, developing dark, snakelike tails
               as they move inward (part of the long-lived stream
               mentioned above)
               
Mar. 21, 2000: dark tear-drop shaped features curving downward around
               the side of a slowly rising coronal structure on the
               east limb (also part of the long-lived inflow stream
               seen in the Oct. 24, Dec. 29, Jan 14, and Feb 6-7 & 8
               movies.
               
               
* We use the usual convention that east is to the left when looking
up at the sky, but on the right when looking down on maps of the Earth.
************************************************************************



Feb 8, 2000 - 105kB MPG

Mar 21, 2000 - 95kB MPG

Oct 24, 2000 - 245kB MPG

Jan 14, 2000 - 245kB MPG

Oct 24, 2000 - 212kB MPG

Oct 11-12, 2001 - 276kB MPG

Mar 28-29, 2002 - 379kB MPG

Mar 29, 2002 - C3 MPG

Additional information can be found in the following papers:

1. "Coronagraph Observations of Inflows During High Solar Activity",
    Wang, Y.-M., Sheeley, N.R., Jr., Howard, R.A., St. Cyr, O.C., &
    Simnett, G.M.: 1999, Geophys. Res. Letters 26, 1203.
     
2. "The Dynamical Nature of Coronal Streamers", Wang, Y.-M., Sheeley,
    N.R., Jr., Socker, D.G., Howard, R.A., & Rich, N.B.: 2000, J. Geophys.
    Res. 105, 25133.
     
3. "Coronal Inflows and the Sun's Nonaxisymmetric Open Flux", Sheeley, N.R.
   Jr., Knudson, T.N., & Wang, Y.-M.: 2001, Astrophys. J. Letters 546,
   L131.
     
4. "Coronal Inflows and Sector Magnetism", Sheeley, N.R., Jr. & Wang, Y.-M.:
   2001, Astrophys. J. Letters 562, L107.
                         
5. "Observations of Core Fallback During Coronal Mass Ejections", Wang, Y.-M.
    & Sheeley, Jr., N.R.: 2002, Astrophys. J. 567,1211.

6. "Characteristics of Coronal Inflows", Sheeley, N.R. Jr. &
   & Wang, Y.-M.: 2002, Astrophys. J. 579, 874 


SOHO Animations


Comets and Planets

Comet Hyakutake - May 1-6, 1996

Comet Macholtz 1 - Jan 2002 (Java Movies)

C3 Movie of non-Kreutz comet SOHO-46 (April 11-12 1998).

Comet C/2002 V1

Sixteen Quickloop movies of the comet NEAT V1 have been created. There are 4 filters, orange, red, blue, and IR (abreviated as o,r,b,i respectively). There are two different regions images: x-256:1023, y-512:1023 on the 16th and 17th, x-768:1023, y-0:1023 on the 18th and 19th, referenced as 1 and 2 respectively. Both short, s, and long, l, exposures were taken in each filter. Thus there are 4*2*2=16 movies. The movies are labeled with the 1 lette5r designation for the filter, s or l to indicate exposure time, and 1 or 2 to indicate region.

Transit of Mercury


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Photo Credits for Publication