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Ursa Astronomical Association
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Ursa Astronomical Association

Palus Epidemiarum & Capuanus - 11.4.2022 at 21.51 Vantaa, Pähkinärinne Observation number 106110

Visibility V / V

Paula Wirtanen, Ursa (Helsinki)

Huuh ... the recent news seemed very topical as I was exploring the Moon. The terminator offered exceptionally great views of the Palus Epidemiarum (Swamp of the Epidemics) and Lacus Timoris (Lake Pelon).

Capuanus became the target of the drawing observation. Its diameter is sixty kilometers. Capuanus is a lava-based crater whose ramparts are partly quite worn. The notch on the southern edge of the Capuanus ramparts stood out clearly. To the south-east there is Capuanus A and an unnamed satellite crater, to the south of the main crater is Capuanus D and the slightly larger edge from Capuanus E. was a clear shadow.

I couldn’t help but think of Spartacus and Crixus, who were in the woods of Batiatus in Capua, admiring that handsome crater, but the crater really got its name from the 14th-century Venetian astronomer F. Capuano di Manfredon.

In a photo taken of the area, the Palus Epidemiarum is in the middle of the photo. On the opposite shore of Capuanus on the northern edge of the swamp are Campanus and Mercator , the crater shown at the top right of the picture is Bullialdus . The ghost crater in between is Kies .

The rills between Campanus and Hippalus are called Rimae Hippalus ( #Lunar100: 054), although they appear quite vaguely in this picture. Visually, they separated quite well. Rima Hippalus I stood out quite clearly, running just along the bottom of the Hippalus crater.

Lacus Timoris is an elongated lake district from the south. Next to it are Hainzel and Mee still waiting for the sunrise, only a little edge mountains are visible.

Figure 1 is a sketch of Capuanus made with pencils (NASA HB & Derwent F and 3B).

Figure 2 is a stack of a few photos, stacked and processed with Affinity Photo. The shooting medium has been the iPhone.

Figure 3 is the same image but with an added nomenclature. The area of Rimae Hippalus is marked with a circle in the image.

The second circle at the bottom of the picture is the Wilhelm and Lagalla area of the craters. It looked like a frog to my eyes when viewed with a telescope. Wilhelm has a frog's body and Lagalla's head. Between them, Wilhelm A and Wilhelm B reminded me of the eyes of a spruce frog who are curiously following the intrigues of a terrestrial telescope user.

Additional information
  • Observation target
    • Moon surface feature
  • Name of the observation target
    • Palus Epidemiarum & Capuanus
  • Seeing
    • Excellent
Technical information

Sky-Watcher Skymax-127 (M127 / 1500), 10 & 6 mm + angle prism (images translated "right").

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