North from Pegasus

Pegasus looks like a bigger version of the Big Dipper and the two stars in its dipper (the Great Square Pegasus) lead to Polaris in the same way as the Pointers, and with the same ratio distance (1:5) between stars and Polaris (shown in Figure 8.10).

Caph

SchedaTV CASSIOPEIA /

Kochab

POLARIS

Caph

SchedaTV CASSIOPEIA /

Epsilon Cassiopeia

Kochab

POLARIS

Some folk find Polaris using Ruchba and others by using Delta Cassiopeae. It does not matter but Delta Cassiopeae is used in the Star Clock.

8.9 Polaris from Cassiopeia

CASSIOPEIA '

Ruchbahl!

CASSIOPEIA '

Ruchbahl!

POLARIS

8.9b Polaris from Cassiopeia and the Dipper

POLARIS

A line joining Ruchbah and Alcor pretty well goes through Polaris and the true Pole. This line is used in the Star Clock. Dubhe

8.9b Polaris from Cassiopeia and the Dipper

POLARIS

Cygnus

Derieb jL.

■JLrS cheat

t Mirach

Almach

Pegasus Markab

Alpheratz \

y /

Algenib

îr

8.10 Polaris from Pegasus The Summer Triangle

The Summer Triangle (in Figure 8.11) is not an official constellation but made up by the bluish white Deneb (apparent magnitude 1.26) in the tail of Cygnus the Swan; the yellow-white Altair (apparent magnitude 0.77) in Aquila the Eagle, and bluish Vega (apparent magnitude 0.04) in Lyra. These are bright, obvious stars. Vega is the second brightest star in the northern hemisphere.

Was this article helpful?

0 0

Post a comment