Tighter open cluster, quite remote at 8,000 light years away.

Object IDM103 (NGC 581)
Open cluster Cassiopeia
Mag. 7.4, Size 6′
Details2018-09-08
Not very transparent.
Telescope200mm f5 Newtonian, MPCC
IDAS P2 LPR filter
Guiding c80ED, ASI 290MC
CameraCanon 600D
Exposure(s)10x60s, darks and flats
CaptureAPT, PHD
ProcessingNebulosity, Photoshop