54.Birt

Eastern part of Mare Nubium, where we find a great number of ridges. Not far from Birt Crater we find the well-known Rupes Recta. If the light comes in from the east it casts a broad shadow, also visible from Earth in smaller telescopes. If the light comes in from the west we see it as white stripe on the darker back ground. In bigger telescopes we can see a rille crossing Birt and Birt F.

BIRT - William R. Birt. (1804-1881) English astronomer and selenographer.

Crater. (15.8km/10Mi  ) (Dept: 3,470m /11,385ft) (22.38S, 8.66W) Bowl-shaped with a raised rim.     

HESIODUS - Hesiodos. (Ἡσίοδος) (ca.700 BC) Greek poet, major source on Greek mythology, farming techniques, early economic thought, archaic Greek astronomy and ancient time-keeping.

Crater. (43km /27Mi ) (Dept: 450m /1,475ft) (29.43S 16.44W) Low rim heavily worn, southwest rim being slightly intruded upon by Hesiodus A. Hesiodus A has a double concentric wall.     

LASSELL - William Lassell (1799 1880) English amateur astronomer. Using  his self-build telescope he discovered the first Neptune Moon. And was co-discoverer (With Bond) of Saturn's 8th Moon, and of two Moons of Uranus. He also discovered 600 Nebulae.

Crater. (23km /14Mi ) (Dept: 910m /8,985ft) (15.5S, 7.9W) Low rim, interior flooded.

LIPPERSHEY - Hans Leppersheij (Died: 1619) Dutch optician who invented the first telescope.

Crater. (6.8km /4Mi ) (Dept: 1,360m /4,460ft) (25.97S 10.45W) Circular, cup-shaped.

NICOLLET - Jean Nicholas Nicollet (1788 - 1843) French selenographer.

Crater. (15.2km /9Mi ) (Dept: 2.030m /6,660ft) (22S, 12W) Sharp edged crater.

MARE NUBIUM - Sea of Clouds (Named by Giovanni Riccioli in 1651) ( Riccioli's Moon Map )

Mare (715km /444Mi ) (20.59S, 17.29W) Roughly circular formation. The rays of Tycho run over the Mare.

PITATUS - Pietro Pitatis (16th century) Italian astronomer and mathematician.

Crater. (101km /62Mi ) (Dept: 680m /2,230ft) (29.91S, 13.56W) Lava flooded walled plain. Rilles along the inside of the Wall. Central mountain.

RUPUS RECTA - Straight Wall. Named by William R. Birt, discovery of the Straight Wall is usually attributed to J. H. Schrter. But Ashbook noticed it had actually been seen and drawn by Christiaan Huygens, using a 123-foot, (focal length), refractor on the nights of May 30-31, 1686.

Wall. (Length: 96km /60Mi ) (Height: 240m - 300m /790 - 985ft) (Width: ca. 2,500m /8.200ft)(Angle of slope: 7) (24.23S, 24.74W) Rupes Recta is a linear fault, or rille, on the Moon.

 

Hesiodus

A

08.0km

Dept: 1.070m

    30.1S,    17.0W

Birt

A

06.8km

Dept: 1.040m

    22.5S,    08.3W

Birt

F

03.1km

Dept: 0.470m

    22.3S,    09.2W

Wolf

B

17.0km

Dept: 0.000m

    23.1S,    16.4W

Lassell

D

01.7km

Dept: 0.400m

    14.5S,    10.5W

 

 

 

 

 

 

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PROMONTORIUM TAENARIUM - Cape Taenarium. According to Hevelius the designation of cape Matapan, (or Taineron), on the Peloponnesos.

Cape. (70km/43.5Mi ) (Height: 700m/2,300ft) (19.0S, 8.0W) The Cape is at the border of the mountainous area east of Mare Nubium and the Mare.

WOLF - Max Wolf (1863 - 1932) German astronomer, with the assistance of his co-workers he found more than 300 planetoids.

Crater. (25km /15Mi ) (Dept: 790m /2,590ft) (22.78 S, 16.65 W) Lava flooded crater remains. Connected with Wolf B.

 

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