October, Tropics (October 15th, 10:30 p.m. local time)

Western Horizon
Eastern Horizon

West

The sky, at the times of the autumnal equinox, at the tropics, is an ensemble of sky patches of interest. West, the Summer Triangle is seen, relatively low, northwest. The Summer Triangle is the distinctive feature of the summer skies, in the northern hemisphere. Like the name, it's a vast triangle of stars, the spikes of which are constituted by the three, main stars of constellations Cygnus, the Swan, Aquila, the Eagle, and Lyra, the Lyra. As Deneb, of Cygnus, is the upper, northwesternmost star, the star about West, lower, is Altair, of Aquila, as the third spike, low, northwest, is Vega, of Lyra. The last gleamings of Sagittarius, the Archer are seen near the horizon southwest, with Capricornus, the Goat above, high, and higher still, Aquarius, the Water Bearer. The other southwestern parts of the sky are introducing to what is seen South. Let's turn South! It's there a swarm of small, typically southern constellations, with, further such bright stars like Achernar, Fomalhaut, or Peacok. Phoenix, the Phoenix, Sculptor, the Sculptor or Grus, the Crane are seen. It's too the best period for the Small Magellanic Cloud, about due South. to a printer-friendly chart
West for the mid-northern latitudes. West for the mid-southern latitudes

East

As Orion, just due East, is just over the horizon, albeit low still now, one begins to see how Eridanus, the River Eridanus, is taking its source to Rigel, and meandering then a long way to the bright Achernar. A fine sight! Cetus, the Whale is anchoring along the first bent of the river. Perseus, Perseus is northeast, with the bright Algol as Triangulum, the Triangle and Aries, the Ram, are seen to its upper right. Higher still a part of the faint chain of Pisces, the Fishes is to be seen. Taurus, the Bull, is still low, as the Pleiades are well visible. Should we turn North now, a fine show is provided there! As Cepheus, Cepheus, and Cassiopeia, the Queen are seen -fine shows- the row above, much high in the sky, is featuring the Great Square of Pegasus, and the line of Andromeda, Andromeda. As the Great Square of Pegasus is maybe too much high, it's about the best time to observe the famed M13, the Andromeda Galaxy. The Andromeda Galaxy is a large spiral galaxy, akin to our own Milky Way Galaxy, as, further, it's providing us with a view of our own island-universe would look like, could we see it from the outside. M13 is a fine binocular object. On the chart, it's the grey oval. to a printer-friendly chart
East for the mid-northern latitudes. East for the mid-southern latitudes

(color maps with Stellarium; printer-friendly charts with Cartes du Ciel, Patrick Chevalley)