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Contains:  NGC 910, NGC 906, NGC 898, NGC 891
Getting plate-solving status, please wait...
NGC891 and friends, 


            Thomas Richter
NGC891 and friends

NGC891 and friends

Technical card

Resolution: 2977x2171

Dates:Oct. 14, 2017

Baader B 1.25'' CCD Filter: 7x300" -20C bin 1x1
Baader G 1.25'' CCD Filter: 7x300" -20C bin 1x1
Baader L 1.25'' Filter: 21x300" -20C bin 1x1
Baader R 1.25'' CCD Filter: 7x300" -20C bin 1x1

Integration: 3.5 hours

Darks: ~35

Flats: ~27

Bias: ~100

Avg. Moon age: 24.22 days

Avg. Moon phase: 28.62% job: 1770423

RA center: 36.032 degrees

DEC center: 42.114 degrees

Pixel scale: 1.218 arcsec/pixel

Orientation: 356.728 degrees

Field radius: 0.623 degrees

Locations: Vockenroth, Neuhof, Bayern, Germany


Object description (

NGC 891 (also known as Caldwell 23) is an edge-on unbarred spiral galaxy about 30 million light-years away in the constellation Andromeda. It was discovered by William Herschel on October 6, 1784. The galaxy is a member of the NGC 1023 group of galaxies in the Local Supercluster. It has an H II nucleus.
The object is visible in small to moderate size telescopes as a faint elongated smear of light with a dust lane visible in larger apertures.
In 1999, the Hubble Space Telescope imaged NGC 891 in infrared.
In 2005, due to its attractiveness and scientific interest, NGC 891 was selected to be the first light image of the Large Binocular Telescope. In 2012, it was again used as a first light image of the Discovery Channel Telescope with the Large Monolithic Imager.

Supernova SN 1986J was discovered on August 21, 1986 at apparent magnitude 14.



Thomas Richter
License: None (All rights reserved)


  • Final
    NGC891 and friends, 


            Thomas Richter
  • NGC891 and friends, 


            Thomas Richter


Here is a cropped Version

Sky plot

Sky plot


NGC891 and friends, 


            Thomas Richter