About this Image
NGC 891 is a classic example of an edge-on spiral galaxy bisected by a dark dust lane, seen from the side, so it's spiral structure is hidden from our line of sight. Subtle dust structures perpendicular to the disc and blue star burst areas can be seen along the plane of the galaxy.
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 secondary focus at f/10
|Camera||SBIG STL-11000M at -25C, internal filter wheel, AO-L|
|Date||Sep 30 - Oct 17, 2006.|
|Sky Conditions||mag 5 sky, seeing 1.6-2", temperature 5-12 C|
|Exposure||L:R:G:B = 360:120:120:120 minutes (30-minute sub-exposures),|
|Processing||Image aquisition in Maxim 4.56; image calibration, preprocessing, deconvolution in CCDStack; final processing, highpass and unsharp filtering in Photoshop CS2;|