March 31, 2020

Event of the Week: A New England Occultation.

Lunar occultations are always cool events; now you see a star or planet, now you don’t. The way they “wink in” and “wink out” with an improbable abruptness reminds us of the colossal velocity of the Moon about our planet. But beyond being just plain cool, they also still have scientific value; close double stars have been discovered this way, as they “wink out” in a step wise fashion. If enough observers are placed along the graze line, an accurate profile of the limb of the Moon can even be ascertained.

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AstroEvent for the week of June 30th-July 7th, 2008.

And now for a difficult challenge…

I give you a New England Occultation.

First up, I’d like to apologize for the short notice on this week’s featured event, which occurs seconds before midnight tonight June 30th over New England and the Canadian Maritimes. [Read more...]