Object: L 91
Feature Name: de Gasparis Rilles
Significance: Area with many rilles

de Gasparis is a lunar crater that is located in the southwest part of the Moon. The rim of de Gasparis is worn and eroded, and the interior has been flooded by basaltic lava. The surviving outer rim reaches a maximum altitude of about 0.8 km.

This crater is notable for the formation of rilles that criss-cross the floor and the surrounding surface. This system of clefts in the surface is designated Rimae de Gasparis, and they span an area of about 130 kilometers in diameter. The rilles are thought to have been created due to tectonic faults deep below the surface. As they cut across de Gasparis, this indicates that they were formed after the crater.

DMK 21AU-4.AS through 200mm f/4 GSO Newtonian with Tele Vue 5x Powermate.

Best of 2500 frames stacked in Registax. Processed in Astra Image 3.0, Nebulosity and Paintshop Pro.