L77: Sirsalis Rille

The Sirsalis Rille — the longest rille on the moon — once transported material to Oceanus Procellarum. This sketch only captures the northern half passing close to craters Sirsalis (left) and Sirsalis A. The sketch was made during high sun.

Sketch made on 10 July 2014 using a SkyWatcher 10″ and a TeleVue Nagler zoom 3-6 mm. North is down.