L 62: Mons Rümker

Rising 1100 meters above the mare in the northwestern part of Oceanus Procellarum are a concentration of lunar domes collectively known as Mons Rümker. The mountain is 70 km in diameter and astronomers have counted 30 domes on it’s slopes.

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Observed on 25 October 2015, UT 18:30, using a SkyWatcher 10″ and a TeleVue Nagler 3-6 mm zoom. Seeing 3/5 deteriorating to 2/5. South is up.

Observed at low sun, but with mediocre seeing, I was able to readily discern one of the domes — the central peak in the sketch. Comparing my sketch to the image from Lunar Orbiter 4, inserted below, I seem to have caught traces of at least three additional domes.

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Image from the Lunar Orbiter 4 acquired 1967. The image is rotated to match the sketch.
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