L24: Hyginus Rille

Hyginus is the largest volcanic crater on the moon. It is also the junction of two very distinct rilles. To the east (left in sketch) is a highland area, harboring among other peaks the so called Schneckenberg, named after it’s spiral shape. To my eyes the spiral wasn’t a spiral at all, but rather a roundish feature (indicated by the second arrow). The big crater to the bottom left is Manilus.

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Sketch made on 8 March 2014 using a SkyWatcher 10″ and a TeleVue Nagler zoom 3-6 mm (first light). North is down. 

 

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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.

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