About this Image
NGC 891 is a classic example of an edge-on galaxy bisected by a dark lane.
It is actually a spiral galaxy seen edge-on from the side, so it's spiral structure is hidden from our line of sight.
Recent observations indicate that NGC 891 may actually be a barred spiral galaxy, making it an SBb galaxy according to Hubble classification type.
16" cassegrain in primefocus at f/3
|Camera||SBIG STL-11000M at -30C, internal filter wheel|
|Date||Jan 15, 2005.|
|Sky Conditions||mag 5 sky, good transparency, temperature -2 C|
|Exposure||L:R:G:B = 45:15:15:15 minutes (5-minute sub-exposures), 30 min Halpha (10-minute sub-exposures),|
Image aquisition in Maxim, image calibration, aligning, DDP in ImagesPlus; color balance, curves in Photoshop;
north is to the left;