Organizations:

Big Bear Solar Observatory, NJIT

National Solar Observatory

Global Halpha Network, NJIT

Center for Solar Terrestrial Research, NJIT

Space Weather Research Laboratory, NJIT


Related useful Links:

Sunspot Drawings, Bogazici University

Debrecen Photoheliographic Data, Heliophysical Observatory

NOAA Solar Prominences and Filaments Data

National Solar Observatory Digital Library

The Solar Maximum Mission

The Compton Gamma Ray Observatory

Yohkoh Solar Observatory