BRIEF DESCRIPTION
The dark background of Mare Insularum contrasts with bright ray systems from two main centers: the crater Copernicus (in the east) and, especially, the crater Kepler which dominates this area. Perhaps the best-known group of lunar domes is that situated north of the crater Hortensius. Other domes that can be seen through even a quite small telescope lie to the west of the crater Milichius and to the south of the crater T. Mayer.Refer to your Anton Rukl atlas of the Moon, page 87.

LUNAR ORBITER IMAGES:
Lunar Orbiter Database
Encke, 29 km
 http://cass.jsc.nasa.gov/research/lunar_orbiter/img/4-138H1.jpg
Hortensius, 14.6 km
 http://cass.jsc.nasa.gov/research/lunar_orbiter/img/4-133H1.jpg
 http://cass.jsc.nasa.gov/research/lunar_orbiter/img/4-126H1.jpg
Insularum, Mare
Kepler, 32 km
 http://nssdc.gsfc.nasa.gov/imgcat/hires/lo3_m162.gif
 http://cass.jsc.nasa.gov/research/lunar_orbiter/img/4-138H2.jpg
 http://www.lunaranomalies.com/images/Kep1-7.jpg (lo3 162M)
Kunowsky, 18 km
 http://cass.jsc.nasa.gov/research/lunar_orbiter/img/4-133H1.jpg
Milichius, 13 km
 http://cass.jsc.nasa.gov/research/lunar_orbiter/img/4-133H2.jpg
Milichius, Pi
Milichius, Rima

APOLLO IMAGES:
Davy Chain
http://cass.jsc.nasa.gov/expmoon/Apollo16/A16metric1972.gif
http://cass.jsc.nasa.gov/expmoon/Apollo16/A16metric2197zoom.gif

RESEARCH UPDATES:
The Moon: Lunar Orbiter 3 (NASA)
Digital Elevation Model (DEM) of Kepler (CEPS)
Kepler - Part One (Steve Troy)
Dome West Of Kepler & Domes Near Montes Spitzbergen (R. Lena)
Geometry in Hortensius - Mike Bara
Hortensius Report - Steve Troy

RESEARCH NOTES
Kepler (Lunascan)
AS14-78-10378(H) - Oceanus Procellarum near Kunowsky (AOTM, SP-362)
Around Procellarum (Naoyuki Kurita)
Kepler (The Moon - Wilkens & Moore)

ANOMALIES
LAC-024: (Source: 111,50) Crater Kepler comes under suspicion. "Astronomer Dr. Aniceto Lugo...in September (5th, 1954),...he had observed flashes of light inside crater Kepler on the moon."

LAC-054: (Source: EA,140A) Photo of three domes in the center of the crater Kepler.