![](/xe/files/attach/images/2590/965/105/552ac23a7ed7cd1ad18a8cfb70e403fc.jpg)
![](/xe/files/attach/images/2590/965/105/352d28ec735525f1dcedeefc99a9cbf9.jpg)
M103
NGC 581
Other description: Open cluster rich.
Constellation: Cas
Dreyer description: Cluster, pretty large, bright, round, rich in stars, stars of magnitude 10 to 11; = M103.
Magnitude: 7.4
RA: 01h 33m 28.1s Dec: +60°43'12"
RA: 01h 33m 12.0s Dec: +60°42'00" (Epoch 2000)
Size: 6.0'
카시오페이아 자리에 위치한 산개성단
2003년 12월 20일 덕초현 천문인마을
AP130EDF, EQ1200GTO, ST10XME
RGB: 3min x 2