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SQMGraph | by photoastro
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SQMGraph

Sky Quality Meter readings from the Cherry Mountain Observatory (NW of Fredericksburg, Tx on the night of the Total Eclipse of the Moon (Dec 21, 2010; totality from 1:41 to 2:53 a.m.) (This observatory is not mine, image copied to show the data only)

 

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Uploaded on December 23, 2010