This cluster is visible to the naked eye, and will be easily found.

The nebula 2 H (iv.) is a remarkable one with a powerful telescope.
The star 11 Monocerotis is a fine triple star described by the elder Herschel as one of the finest sights in the heavens.

Our observer, however, will see it as a double (see Plate 3).

[delta] Monocerotis is an easy double, yellow and lavender.
We may now leave the region covered by the map and take a survey of the heavens for some objects well seen at this season.
Towards the south-east, high up above the horizon, we see the twin-stars Castor and Pollux.

The upper is Castor, the finest double star visible in the northern heavens.