Moon causes double disappearance

The best UK lunar occultation this month occurs tonight when the dark limb of an eight-day-old Moon occults the star 49 Leonis just after 23:20 GMT (00:20 BST on 5 May) from London. The star is a double, with magnitude +5.8 and +7.9 components, separated by two arcseconds, so the star is unlikely to disappear instantly.

It will be very interesting to use high magnification to attempt to split the twin stars as they are occulted.