365 Days of the Moon -- 20 August, 2014
Lacus Mortis and Burg
The smooth circular lava-flooded feature is 100 mile wide Lacus Mortis. I usually image Lacus Mortis at lower sun elevations so the
shadows give more dramatic effect to the feature's name, which translates as the Lake of Death. When the Italian monk Giovanni Riccioli
named this feature in the mid 17th century, Europe had just emerged from centuries of scientific ignorance and superstition. Even
though Riccioli was learned man, one can imagine the social traditions of the time still leaned toward darker interpretations for the
unknown. Thus it is not surprising that this feature gained such a bizarre name.
Lacus Mortis is actually a large pre-Imbrian crater that has filled with lava flows from nearby Mare Frigoris and Mare Serenitatis.
Once the crater had been paved over with solidified basalt, the much younger Copernican Epoch crater Burg blasted the bull eye-like 24
mile wide crater in the middle of Lacus Mortis. The fingers of Rimae Burg criss cross the western side of Lacus Mortis.
Image taken through a Celestron 11 Edge HD with a 2.5X Powermate and
Skyris 274M camera.
Image copyright Robert Reeves 2014
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