A Comparison of Sunspot and Umbral Area from the San Fernando Obervatory and SDO
Abstract
Sunspot area is an important and basic datum for determining the level of solar activity. We report on a study of spot total and umbral areas determined from images obtained by the San Fernando Observatory (CSUN) and the Solar Dynamics Observatory spacecraft. This research has been supported by grants from NASA and NSF.
- Publication:
-
AGU Fall Meeting Abstracts
- Pub Date:
- December 2016
- Bibcode:
- 2016AGUFMSH31B2559C
- Keywords:
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- 7599 General or miscellaneous;
- SOLAR PHYSICS;
- ASTROPHYSICS;
- AND ASTRONOMYDE: 7899 General or miscellaneous;
- SPACE PLASMA PHYSICSDE: 7999 General or miscellaneous;
- SPACE WEATHER