Posted in Solar Observations, Solar Observations 2005 Tags: active regions, charcoal, ETX70-AT, full disk, H-alpha, NOAA 10826, NOAA 10830, NOAA 10833, PST, solar disk, solar sketches, Sun
Posted in Solar Observations, Solar Observations 2005 Tags: active regions, ETX70-AT, NOAA 10772, NOAA 10773, NOAA 10775, penmubrae, solar sketches, umbrae, white light
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PCW Memorial Observatory - Erika Rix 