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Introduction
Summary of LASCO/EIT What is LASCO? What is EIT? (external link) FAQ Realtime Images Near Real Time Movies Latest Images (Color) LASCO Movie Tool(New!) LASCO Blink Tool Database Queries and Download CME Queries (New!) Data Products Image Gallery Movie Gallery Processing Levels FITS Header Keywords Data Policy Wavelet images/movies Coronal Mass Ejections LASCO CDROMs Eclipse Observations Carrington Maps LASCO Calibration LASCO Sky Map LASCO C3 Planet transits (via Sungrazer) Latest Site Updates Team and Operations Resources LASCO/C1 at MPAe (Germany) LASCO at LAS (France) LASCO Handbook Technical Notes Detailed Documentation Acronyms Solwind Images and CMEs SOHO Home page SOHO and SOHO Instruments Other Solar Satellites and Observatories |
LASCO Movies
Note: Use a MPEG or GIF viewer to view movies and images. Web browsers such as Mosaic or Netscape often reserve lots of colors for themselves and leave few for use by other applications.
Solar CoronaC3 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.
InflowsInflows Seen in C2These 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)
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.
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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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