University of London Observatory
[Loop prominences in H-alpha]
The Sun
N.B.: Never observe the Sun directly without proper eye-protection, or serious and permanent eye damage or blindness will result.

2003 October 28

H-alpha images obtained with the Fry telescope at about 1500 UT, a few hours after the large solar flare on sunspot 10486. Comparison with images from October 27 is shown. (Small spots due to dust shadows require removal by flat-fielding.)
Telescope: Fry 8-inch refractor + H-alpha filter
Camera: Astrovid 2000 video CCD
North is up.

October 27October 28

Another sunspot region of interest (10488), showing substantial changes in one day.
October 27October 28

2003 October 27

Some preliminary still frames: smaller spots are dust shadows which still need to be removed by flatfielding.
 Sunspot 10486
Sunspot 10484
Sunspot 10488
Telescope: Fry 8-inch refractor + H-alpha filter
Camera: Astrovid 2000 video CCD

2003 October 23

 Loop prominences above sunspot 10486
Telescope: Fry 8-inch refractor + H-alpha filter
Camera: Astrovid 2000 video CCD
Observers: First-year students. About 1300 images co-added and processed by Mick Pearson.

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Last modified: 2003 October 28th
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