Starting M13 project

M13-Mean-Luminance-ScaledNow, in mid-autumn, the sky has rotated to the point where M13 is well-located from my observing spot – and it’s dark earlier too.  So I started an M13 data collection project tonight with 2 hours of luminance data, in 5-minute subs.  Colour will follow over the next few available nights.


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