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HOMEPAGE NEWS by Roger Sinnott
Eclipse Over a Pacific Isle
The July 22, 2009, total eclipse of the Sun was a late-afternoon spectacle for the Ring of Fire group on the islet of Ouba, at latitude 2° north in Kiribati.
Yasushi Hirota and Mihyangja Bang
Few other reports I've seen make any mention of this hot-pink prominence, which was so striking on the Moon's left edge to me with 4x binoculars and to three others in our group with no optical aid at all. But we were well south of the centerline of totality. Maybe the oversize lunar disk at this long-duration eclipse concealed it from observers nearer to the centerline.
After recording three Baily's Beads just before second contact (left), expedition leader Jacques Guertin captured the inner to middle corona with his 3.5-inch Maksutov system.
Jacques Guertin
On eclipse day the expedition waded ashore on Ouba, since the islet has no dock.
Roger Sinnott
Sharon and Billy Hahs of Chicago brought along a set of Sears paint chips to match the sky color during totality. Based on that and other careful notes, Billy later made two watercolors to document the eclipse.
Roger Sinnott
In the minutes leading right up to totality, I looked closely for any sign of shadow bands rippling across the white sand. No dice.
Rather than rely on batteries, Roger Sinnott set up this camera tracker powered by a wind-up kitchen timer.
Yasushi Hirota
What had seriously imperiled the Marines' 1943 assault was a tide that failed to rise as high as expected. As a result, the Higgins boats from the Navy transport ships had to discharge men hundreds of yards from shore, leaving them no choice but to wade in under withering fire from well-entrenched Japanese shore batteries. According to military historian Col. Joseph H. Alexander, the tide's mysterious behavior that day lacked scientific interpretation until Donald W. Olson (Texas State University) published his seminal essay on the astronomical factors at play in Sky & Telescope (November 1987 issue, page 526).
Posted by Roger Sinnott, July 27, 2009
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