But to the observer with telescopes of moderate power these nebulae present few features of special interest; and there are regions of the sky now well situated for observation, which, at most other epochs are either low down towards the horizon or inconveniently near to the zenith.

We shall therefore select one of these, the region included in the second map of Plate 2, and the neighbouring part of the celestial sphere.
At any of the hours above named, the constellation Hercules lies towards the east.

A quadrant taken from the zenith to the eastern horizon passes close to the last star ([eta]) of the Great Bear's tail, through [beta], a star in Bootes' head, near [beta] Herculis, between the two "Alphas" which mark the heads of Hercules and Ophiuchus, and so past [beta] Ophiuchi, a third-magnitude star near the horizon.

And here we may turn aside for a moment to notice the remarkable vertical row of six conspicuous stars towards the east-south-east; these are, counting them in order from the horizon, [zeta], [epsilon], and [delta] Ophiuchi, [epsilon], [alpha], and [delta] Serpentis.
Let the telescope first be directed towards Vega.

This orb presents a brilliant appearance in the telescope.