NGC 891 Spiral Galaxy

clic for 50% size 1590 x 1336 (560 kB)

 

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.
It is situated 9 million light years away. North is to the left.
The fast imaging system makes a lot of background galaxies visible.

Checkout a close-up on this galaxy here.

Below you see a crop on the center of the above image in 100/130% size.

Even below a crop on a distant galaxy cluster in 50/100% size

clic for a wider view 1665x1332 (365 kB)

clic for 100% size 1024x658 (127 kB)

 


Technical Details
Optics

16" cassegrain in primefocus at f/3

Mount MK-100 GEM
Camera SBIG STL-11000M at -30C, internal filter wheel
Filters Astronomik LRGB
Date Jan 15, 2005.
Location Wildon/Austria
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),
Processing Image aquisition in Maxim, image calibration, aligning, DDP in ImagesPlus; color balance, curves in Photoshop;
north is to the left;