The week of May 15-21 takes us from lunar Day 19 to Day 25, during which the Moon will not be viewable until after midnight.
This week we will highlight the crater Bürg viewable early Monday morning.
Day 19; T=26°E
Bürg: [NE/E12] The centerpiece of the charmingly named Lacus Mortis (“the Lake of Death”) is the 25-mile crater Bürg, a complex crater with terraces and a central mountain peak that appears to be split in two. As far as complex craters go, Bürg is a bit unusual. Instead of being mostly circular, the rim is scalloped and wavy and there is an inordinate amount of slumping on the western interior slopes; a finger of the slumping actually touches the central mountain peak! Some observers have reported a small summit pit on the top of the central mountain. Can you make it out?
It is highly recommended that you get a copy of Sky and Telescope’s Field Map of the Moon, the very finest Moon map available for use at the telescope. It is available for $10.95 at www.skyandtelescope.com and on Amazon. All features mentioned in this blog will be keyed to the grid on the Field Map and will look like this: Plato: [NW/D9]
Courtesy of Gray Photography of Corpus Christi, Texas
Lunar photos: NASA / USGS / BMDO / LROC / ASU / DLR / LOLA / Moon Globe. Used by permission
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