The Moon Guide
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The phase of the Moon right now

Phase
 
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Schools' Moonwatch 2010


Cassini   Credit Peter Grego
13 November 2010 The Moon is at first quarter (half illuminated) phase, this evening. Montes Caucasus (the Caucasus Mountains) have completely emerged into the lunar morning sunlight and form a splendid sight.

To their west lies the broad range of Montes Alpes (the lunar Alps). Among the many interesting features to be seen among these jumbled peaks is a dark line which emerges from the morning terminator and cuts through the mountains to its east; this is Vallis Alpes (Alpine Valley), a huge rift valley in the lunar crust some 134 km long. To its south is the crater Cassini (60 km), remarkable for its resemblance to a wax letter seal.

Several noteworthy rilles are visible through larger instruments in the Sinus Medii (Central Bay)–Mare Vaporum (Sea of Vapours) area. They include the fascinating cratered valley Rima Hyginus (Hyginus Rille), a series of collapse pits along a 226 km long valley, an extensive network of fine linear rilles near the crater Triesnecker (27 km)
Rima Hyginus Credit Peter Grego
and the extensive, bold linear valley of Rima Ariadaeus (Ariadaeus Rille), some 290 km long.

Further south can be found the large ancient crater Hipparchus (155 km) and the lovely crater Albategnius (139 km). The heavily cratered southern highlands make a fascinating place to spend a good while simply eyeballing the view and imagining the tremendous asteroidal and cometary bombardment that the Moon endured some 3.8 to 4.1 billion years ago

Notes by Peter Grego

Albategnius
Albategnius
Reference map1 Alps and Alpine Valley; 2 Cassini; 3 Caucasus Mts; 4 Mare Vaporum and Hyginus Rille; 5 Triesnecker; 6 Sinus Medii; 7 Hipparchus; 8 Albategnius. For a larger map go to http://www.popastro.com/moonwatch/moon_guide/moonmap.html
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Mare Crisium
Mare Crisium

MoonWatch evenings

10–11 November 2010

12 November 2010

13 November 2010

14 November 2010

15 November 2010

16 November 2010

17 November 2010

18 November 2010

Jupiter Watch 2010
 
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