Caldwell 14

These two bright star clusters appear side by side in the northern sky, about halfway between the constellations Perseus and Cassiopeia.

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7,500 light-years

Apparent Magnitude

5.3 to 6.1


Perseus and Cassiopeia

object type

Open Cluster

Caldwell 14
NASA, ESA, and S. Casertano (Space Telescope Science Institute); Processing: Gladys Kober (NASA/Catholic University of America)

Visible to the naked eye from a dark location, Caldwell 14 is popularly known as the Double Cluster in Perseus. These two bright open clusters, also called NGC 869 and NGC 884, appear side by side, about halfway between the bright stars in the constellations Perseus and Cassiopeia. Located about 7,500 light-years away, the clusters contain hundreds of hot, young stars that cause them to shine with apparent magnitudes of 5.3 and 6.1 in our sky. To the naked eye, the two clusters look like one large hazy patch, but binoculars and telescopes neatly split the pair, providing beautiful views of this celestial treasure. The Double Cluster appears highest for Northern Hemisphere observers during the late fall or early winter. (Southern Hemisphere observers close to the equator should look for it in late spring or early summer.)

Caldwell 14
A ground-based image from the Digitized Sky Survey (DSS) in the upper left shows Caldwell 14, the Double Cluster in Perseus, with an outline of the region imaged by Hubble’s Wide Field and Planetary Camera 2 (WFPC2).
Ground-based image: Digitized Sky Survey (DSS); Hubble image: NASA, ESA, and S. Casertano (Space Telescope Science Institute); Processing: Gladys Kober (NASA/Catholic University of America)

This Hubble image, taken with the Wide Field and Planetary Camera 2, shows stars in NGC 884 (the more eastern member of the pair). Captured through a single visible-light filter and colored blue, the image was taken as a “parallel” observation — obtained while the telescope was using another one of its science instruments to target a nearby object.

Star chart for Caldwell 14
This star chart for Caldwell 14 represents the view from mid-northern latitudes for the given month and time.
Image courtesy of Stellarium


Apparent Magnitude - The brightness of an astronomical object as seen from Earth, influenced by the object's distance from Earth, its absolute magnitude, and even gas and dust that lie between the object and Earth.

Open Cluster - A group of stars loosely bound by gravity, destined to be short lived because the gravitational interactions between members are weak enough that stars can be drawn away from the cluster by stronger gravitational forces.

Explore Hubble's Caldwell Catalog

The following pages contain some of Hubble’s best images of Caldwell objects.

Caldwell 1

Also known as NGC 188, this group of stars formed from a large cloud of gas making the stars roughly…

Caldwell 2

This shell of gas is expanding outward, away from the dying star within.

Caldwell 3

This barred spiral galaxy was first spotted by British astronomer William Herschel in April 1793 in the constellation Draco.