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Dates & Location

October 20 - 23 2009 using the SMAP site at Weed, New Mexico. Elevation 7269 ft. Lat 32.8°N Long 195.5W  

Catalogue identification

NGC 891, UGC 1831, PGC 9031

Equipment Used

Officina Stellare RC400 at 3304mm focal length
Paramount ME German equatorial Mount
Camera SBIG ST-11000M with FW-8L filter wheel.
TheSky V6 Telescope control
MaxIm DL V4.53 Camera control.


Where it is in space

Outside our galaxy but part of the local galaxy group. It is seen in the Eastern part of the constellation of Andromeda and is easily seen in small telescopes or large binoculars glowing at magnitude 10.8.

Remote session using RADMIN PC control from Ravenshead, UK.
LRGB exposures:- 330:80:80:80 mins total using 10 min sub-exposures
at -20
°C and -25°C. All images binned 1x1. AllC

  What it is

NGC 891 is an edge on unbarred spiral galaxy about 30 million light years away. The galaxy is a member of the NGC 1023 group of galaxies in the local galaxy super-cluster. It has an H II nucleus of ionised Hydrogen gas.

Processing Methods

Images acquisition and telescope control with CCDSoft V5  
  Data reduction and Luminence De-convolution with CCDStack. RGB colour prepared in CCDStack.  

Master RGB image and Master Lum Image finished with Photoshop CS2.Final LRGB image using PhotoShop CS2