M103, NGC 581

The irregular star cluster M103, or NGC581, is a distant cluster in the constellation Cassiopeia. One of the more remote open clusters, at about 8000 light-years, M103s relatively small angular size still corresponds to a sizable 14 light-year diameter (this image is only 8.6 arc minutes across). The bright binary (upper right, NW) is not part of the cluster. M103 may be over 20 million years old (there seems to be some dispute over its actual age). M103 is one of the 'extra' objects added from Méchain's observations but not actually observed by Messier. This true-color picture was created from fifteen images taken in the BVR pass-bands at the Kitt Peak National Observatory's 2.1-meter telescope, during the night of December 24th 2000 (yes, Christmas Eve).

Credit:

Hillary Mathis, N.A.Sharp/NOIRLab/NSF/AURA

About the Image

Id:noao-m103
Type:Observation
Release date:June 30, 2020, 9:53 p.m.
Size:1700 x 1700 px

About the Object

Name:M103, NGC 581
Constellation:Cassiopeia
Category:Star Clusters

Image Formats

Large JPEG
1.4 MB
Screensize JPEG
367.7 KB

Zoomable


Wallpapers

1024x768
355.5 KB
1280x1024
668.0 KB
1600x1200
1.0 MB
1920x1200
989.3 KB
2048x1536
1.3 MB

Coordinates

Position (RA):1 33 33.29
Position (Dec):60° 40' 28.28"
Field of view:8.62 x 8.62 arcminutes
Orientation:North is 2.8° left of vertical


Colors & filters

BandTelescope
Optical
R
KPNO 2.1-meter Telescope
Optical
V
KPNO 2.1-meter Telescope
Optical
B
KPNO 2.1-meter Telescope