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SUNSPOTS

Sunspots on Aug. 15, 1999 Chart them Yourself! Sunspots are dark regions on the surface of the Sun which are cooler than their surroundings. Individual sunspot groups have a "life" cycle which can last for months! Using the data archived on this page, you can track a group of sunspots as it rotates around on the surface of the Sun.

There are three types of image formats available, jpeg, PDF, and postscript. PDF format is an Adobe acrobat format, a reader may be downloaded from here. Postscript files may be read using GSview.

All images below are from the Big Bear Solar Observatory in California.

White Light Images:
Spots from 8/15/1999 August 15, 1999 Jpg (54 k)
PDF (263 k)
PS (1.5 M)
Spots from 8/16/1999 August 16, 1999
JPG (54 k)
PDF (264 k)
PS (1.5 M)
Spots from 8/17/1999 August 17, 1999
Jpg (55 k)
PDF (267 k)
PS (1.5 M)
Spots from 8/18/1999 August 18, 1999
Jpg (55 k)
PDF (267 k)
PS (1.5 M)
Spots from 8/19/1999 August 19, 1999
Jpg (55 k)
PDF (267 k)
PS (1.5 M)
Spots from 8/20/1999 August 20, 1999
Jpg (55 k)
PDF (267 k)
PS (1.5 M)
Spots from 8/21/1999 August 21, 1999
Jpg (55 k)
PDF (267 k)
PS (1.5 M)
Spots from 8/22/1999 August 22, 1999
Jpg (55 k)
PDF (267 k)
PS (1.5 M)
Spots from 8/23/1999 August 23, 1999
Jpg (55 k)
PDF (267 k)
PS (1.5 M)
Spots from 8/24/1999 August 24, 1999
Jpg (55 k)
PDF (267 k)
PS (1.5 M)
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NASA Logo Image Author: Mitzi Adams, mitzi.adams @ nasa.gov
Curator: Mitzi Adams, mitzi.adams @ nasa.gov

Last Updated: January 22, 2007