Lunar motion at deepest eclipse

While we do not yet know what the solar corona will look like on Feb. 26, we get a hint from observations one lunar period earlier, namely about Jan. 30. This illustration shows a Yohkoh image from that date (18:48:59 UT, AlMg filter) with lines superposed showing the lunar limb every two minutes. The color table is reversed; N is up and W to the right. The heavy circle shows the predicted location for 18:50 UT, near the maximum obscuration, and the arrow shows the direction of motion of the lunar shadow. The color table is reversed; N is up and W to the right. The heavy circle shows the predicted location for 18:50 UT, near the maximum obscuration, and the arrow shows the direction of motion of the lunar shadow. The lunar motion is quite rapid - an apparent speed of some 2300 km/s as it crosses the brighter active region to the SW.