From top (South) to bottom (North) are craters Lade (58 km.), Godin (36 km.) and Agrippa (48 km.). This region was at the terminator and striking to observe on this occasion.
Crater Lade with the missing south wall and the large lava flooded floor dates from a time before any life is known to have existed on earth. Crater Agrippa appears on the Moon sometime between the oldest cyanobacteria microfossils and the appearance of the first multicellular eukaryotic metazoans life forms. Godin is younger still, a Copernican period impact. All three of these craters are in a rugged lunar terrain well west of Mare Tranquillitatis and just south of Rima Ariadaeus showing well in the low morning sunlight.
For this sketch I used: black Canson paper, white and black Conte’
pastel pencils and blending stumps, white Pearl eraser
Telescope: 10 inch f/ 5.7 Dobsonian and 6 mm eyepiece 241x
Date: 05-17-2013, 01:10 - 02:40 UT
Temperature: 16° C (60° F)
Partly cloudy, light breeze
Seeing: Antoniadi III
Colongitude: 353 °
Lunation: 7 days
Illumination: 38.8 %