The Binocular Sky


M34 (NGC 1039)

Constellation: Per
Object Type: Open Cluster
RA:  2h 42m 4s
Dec:  +42° 45' 42"
Magnitude: 5.2
Recommended minimum aperture: 50mm

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


M34 is a degree NE of the mid-point of a line joining β Persei (Algol) to γAndromedae (Almaak). It is visible to the naked eye under ideal sky conditions

What You Should See:

This is a superb cluster for binoculars of any size, showing a dozen or more stars in a 10×50. When you observe in this region, you could also ascertain the magnitude of the β Per, one of the more famous variable stars; it is an eclipsing binary star. The name Algol comes from the Arabic Ras al Ghul, the Demon's Head. The ghoul or demon in question is Medusa.

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