Friday 13th of January 2017 | Steve Germann
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Links for the leap second mention at tonight’s The Sky this Month:
…and for the International Occultation Timing Association. The focus of the IOTA has shifted from grazes to pure occultations where the double-ness of a star can be measured. In some cases this is the only way to know the star is a double.
To see how eclipse totality duration varies depending on observing locations see this page with detailed contour maps:
Photo Credit: Mercury Transit – Bill Tekatch
