Prominent craters near the northeastern limb of the Moon.
Origin: Impact Diameter: 130 km, 39 km, 23 km Rukl: 2 Type: Craters
Objects: Babbage, Bouguer, Bouguer A, Bouguer B, Foucault, Harpalus, Mare Frigoris, Pythagoras, J. Herschel
Others Identified: Anaxamander, Anaximenes, Carpenter, Horrebrow, La Condamine, La Condamine A, La Condamine C, South, Craters in Mare Frogoris (E, F, F, B)
Observation 1:
Location: Home
Date: 2019-03-18 + 2020-08-31
Time: 8:40 PM AST + 9:35 PM ADT
Equipment: 10" Meade SCT
Eyepiece: Meade Super Plössl 9.7mm
Magnification: x257
Seeing: Very Good (2)
Transparency: Excellent (1)
RI: The foreshortening makes all three craters (Pythagorus, Harpalus and Bouguer) appear elongated, oval shape.
R2: Foucault is closer to Harpalus than is Bouguer.
C1: There is a common wall between Babbage and Pythagoras. J. Herschel was a large crater on the shores of Mare Frigoris, SE of Pythagoras.
Observation 2:
Location: Home
Date: 2019-03-18
R3: Bouguer A and B are deep and round but Bouguer appears deeper and steeper. One corner of Bouguer is not completely symmetrical and rounded. There is also a little outcrop on the NE and it's perhaps flatter in the SW.
R4: Pythagoras looked to have two peaks, one definitely larger than the other. They covered a large area of the crater floor.
C2: Although I did not see the central peaks in Pythagoras during the previous observation, I did this time. However, I did not sketch them.
