Having found zeta Eridani in the last exercise, now if you move this star to the left of your field of vision, eta will appear on the far right: eta. Three dimmer stars are in the middle of your field of vision, above centre. These are rho 1, 2, and 3 and they are not part of the river.

Eta Eridani serves as the end of the first western branch of the river. From here the Eridanus makes a steep descent to the 'tee' stars. In fact we'll need some help from neighbouring Cetus. If you put eta Eridani at the top of your field of vision, you'll see a bright star near the lower right edge. This is pi Ceti. Now put pi Ceti at the top of your glasses and you'll find tau-1 in the middle of your field of vision a bit below centre.