Visit these other interesting sites:

- Sky & Telescope
- ASTRONOMY MAGAZINE
- Mauna Loa Solar Observatory
- Global Oscillation Network Group (GONG)
- Solar Monitor
- KANZELHÖHE OBSERVATORY Solar Images
- Kp Index Monitor
- Mt. Wilson Observatory Web Page
- Lowell Observatory Web Page
- Keck Observatory Web Page
- McDonald Observatory Web Page
- Palomar Observatory Web Page
- National Radio Observatories Web Page
- Yerkes Observatory Web Page
- Lick Observatory Web Page
- U. of Denver's Mt. Evans Observatory Web Page

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