Observing extremely thin Venus crescents

An extremely thin crescent of Venus on June 2nd, 2012, four days before the transit of Venus. Illumination is 0.5%. Copyright Mario Weigand, www.skytrip.de.

Venus appears as a fine crescent at inferior conjunction. During the recent event, I caught the planet on October 31 at 1.4% percent illumination. But it can be observed even thinner than that – with caution!

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