Posted in Solar Observations, Solar Observations 2005 Tags: charcoal, ETX70-AT, faculae, NOAA 1037, NOAA 10822, NOAA 10835, penumbrae, solar projection sketching, solar sketches, sunspots, umbrae
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 