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Moon Fase

XO-1 ingress

July 7, XO-1 transit attempt.

Everything was going great with the remote session until the master telescope of the remote observatory aborted the plan due to an error and closed the roof for safety :-(

This happened while I was asleep, resulting in a short observation, but still having a very nice Ingress of XO-1_b transiting the star's disk.

XO-1 ingress

plotted with error bars

Joao Gregorio