IWLOP #047 - Delambre
Delambre is located near the edge of Mare Tranquilitatis and not too far from Statio Tranquilitatis. Note the sharp rim and terraced walls of Delambre. Try to see this crater at a high sun angle.
Location: 1.9 S 17.5 E Origin: Impact Size: 52 km Rukl: 46 Type: Complex Crater (CC)
Objects: Delambre, Theon Junior, Theon Senior, Delambre D, Apollo 11 landing site
Time: 10:46 PM ADT
Equipment: 6" Dobsonian, 9.7 mm eyepiece + x2 Barlow
Seeing: Good (3)
Transparency: Very Good (4)
R1: Located the 1969 Apollo 11 landing site above Rimae Hypatia and NW of Moltke on Mare Tranquilitatis. The Mare floor looked very flat and smooth at this magnification for the Apollo landing.
R2: The twin craters Theon Junior and Theon Senior were easily located west of Delambre. Both are deep, round, and are much smaller than Delambre. Shadows covered their crater floors.
C1: Delambre D was located on the north wall of Delambre. It appeared more as a slight bump to the otherwise smooth roundness, as well as only see a slight discolouration at this location. One wall of Delambre H and part of the crater floor were barely visible just outside Delambre's NW wall, between Delambre and Theon Senior.