Mauna Loa Solar Observatory
H-Alpha CME Event
22 Apr 1995 . . . Day of Year: 112

Event Information

Event Description

A few prominences are visible in this area, as well as a couple of filaments on the disk approaching the limb. A surge occurs on the limb at PA 260, reaching a height of ~1.06 solar radii. Material can be seen falling to the limb in various areas near the central polar angle of the CME (PA 275).

Event Properties

Start/Stop Times of activity: from ~17:30 to ~18:30 UT
Position Angle span of the various prominences : ~260-270 [degrees]
Speed : Not applicable [km/sec]
Maximum distance from limb : 1.15 [solar radii]

H-Alpha Image Types

* LIMB - Prominences on the limb are visible while an occulting disk in the telescope blocks the disk of the sun. Both limb and disk are both taken in the line of Hydrogen alpha, 656.3 nm.

* DISK images - Filaments on the disk of the sun are visible while the occulting disk is removed and a narrow band filter (0.7 Angstroms) is placed in the optical path of the telescope.

Image Gallery

Please understand that these are only a few of the images that you may access. For the complete list of images, please visit our FTP site.

Best Limb Images

GIF Movie

H-Alpha Limb images:

20:56 UT [.gif] [.jpg]

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Authors:

Holly Higgins( iggy@ucar.edu)
Tera Newman
Joan Burkepile ( iguana@ucar.edu)
work phone: (303) 497-1506
FAX: (303) 497-1589

Web Editor:

Andrew L. Stanger ( stanger@ucar.edu)
Last revision: 29 August 2000

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