Bessel (possible Natural Colors on a Radar Image; credits: Dr Paolo C. Fienga - Lunexit Team)

Mini-RF S-band Zoom Synthetic Aperture Radar (SAR) image strip through central Mare Serenitatis on the Near-Side of the Moon (approx. Long. of the strip ~ 18° East; center Lat. ~ 20° North).
The radar strip runs through the crater Bessel (inset; approx. 15 km (or about 9 mile) diameter; center at 21,8° North Lat. and 17,9° East Long.) and covers the highlands of the Haemus Mountains (on the Rim of the Serenitatis Basin) in its Southern (bottom) third.

The full-resolution SAR data are 30 mt (90 feet). The Streaks of bright and dark material in the Walls of Bessel probably reflect the blockiness of Landslides within the Crater, brighter Streaks having more blocks of the 10-cm (4") scale.

The radar strip covers a major geological boundary in Mare Serenitatis; the darker, lower Maria has higher Titanium content than central Serenitatis. We see this geological boundary in the Mini-RF radar image, caused by higher absorption of RF energy by the high content of the Iron-Titanium Oxide mineral "Ilmenite".

Thus, Mini-RF SAR images can be used to map the Titanium content of the Lunar Maria. The background image is part of the Clementine global mosaic.