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Solar Observations for June 2017

Every month I publish a summary of my daily observations of the Sun and its activity. As our closest star it is extremely interesting to observe and record its activity. My findings add to those observed and published around the globe. You can find out more using this link. Very low activity on the Sun continued throughout June. However on the 1st a Csi (12) group appeared round the NE limb in active region 12661 and produced a type 2F Flare. It had already started prior to the beginning of my observation. It peaked at 23.00 hrs and ended at 23.30 UT. It had an X-ray class of C3. This group grew to a classification value of Cki (39) on the 3rd June and remained on the solar disc until the 5t

Light pollution lament

There appears to be an increase in the frequency of news about both the importance of a dark night sky, the cultural significance of the stars, and the relevance of astronomy to indigenous peoples. This is not news to amateur astronomers who regularly discuss where to find a dark sky site, how to improve outdoor lighting and regularly lament the carelessness with which our society throws light up into the sky. Amateur astronomer Ken Petersen established an organisation called the Sydney Outdoor Lighting Improvement Society (SOLIS) to address this very issue over a decade ago. Since the first electric lights were introduced into Paris and other cities professional astronomers have been very c

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