BRIEF DESCRIPTION
The central part of Mare Tranquilitatis. The most interesting area is in the neighborhood of the crater Cauchy, where under low illumination, a modest telescope will show rilles, a striking fault Rupes Cauchy and the typical domes Omega Cauchy and Tau Cauchy. On the summit of Omega Cauchy is a small craterlet, which is visible with a large telescope. A narrow cleft is present to the west of the crater Maskelyne (lower left-hand edge of the map). Refer to your Antonin Rukl Lunar Atlas chart, page 99.

EARTH-BASED TELESCOPIC IMAGES:
Image - Cauchy (Karine et Jean-Marc Lecleire)
Image - Jansen (Jomo) 

LUNAR ORBITER IMAGES:
Lunar Orbiter Database
Aryabhata, 22 km
Barlow, Dorsa
Cajal, 9 km
Cauchy, 12.4 km
Cauchy, Rima
Cauchy, Rupes
Esam, Mons
Jansen, 23 km
Jansen, Rima
Lucian, 7 km
Lyell, 32 km
Maskelyne, 24 km
Menzel, 3 km
Sinas, 12.4 km
Wallach, 6 km 

RESEARCH UPDATES:
Cauchy (Lunascan)
AS17-2318(P) - Oblique photo of buried crater Jansen R in N. Mare Tranquility (SP-362,229)
AS15-9866(P) - High sun-angle close-up of Jansen B (SP-362)
.