Fine Structure in Sunspots: Sizes, Lifetimes, Motions and Temporal Variations
PHILLIPS LAB HANSCOM AFB MA
Pagination or Media Count:
The analysis of a 4 12 hour series of high resolution white light observations of the umbra in a sunspot NOAA 7519 is described. An object-tracking procedure was applied to the destretched movie of 360 frames. In total, 662 umbral dots were tracked and their intensity variations, effective diameters, lifetimes, and proper motions were measured.