The Binocular Sky


NGC 663

Constellation: Cas
Object Type: Open Cluster
RA:  1h 46m 1s
Dec:  +61° 14' 6"
Magnitude: 7.1
Recommended minimum aperture: 50mm

Charts for 50mm Binocular (5° aperture circle).   Click on a chart to print it.


NGC 663 is the largest of several open clusters that are visible in the same 5° field as δ and ε Cassiopeiae.

What You Should See:

It is superior in every respect to the nearby M103 and, unlike M103 which appears as a small fan-shaped patch of nebulosity, some of the stars are resolvable in 10×50 binoculars.