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Contains:  NGC 891
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NGC 891, 


            Roberto Marinoni
NGC 891
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NGC 891

Technical card

Dates:Sept. 4, 2019Sept. 29, 2019Sept. 30, 2019

Astrodon Tru-Balance Gen2 E-Serie 50mm B: 17x300" -20C bin 2x2
Astrodon Tru-Balance Gen2 E-Serie 50mm G: 18x300" -20C bin 2x2
Astrodon Tru-Balance Gen2 E-Serie 50mm L: 27x600" -20C bin 2x2
Astrodon Tru-Balance Gen2 E-Serie 50mm R: 18x300" -20C bin 2x2

Integration: 8.9 hours

Darks: ~15

Flats: ~15

Flat darks: ~15

Avg. Moon age: 2.86 days

Avg. Moon phase: 12.64%

Mean SQM: 21.40

Basic astrometry details job: 3048780

RA center: 2h 22' 33"

DEC center: +42° 20' 56"

Pixel scale: 1.016 arcsec/pixel

Orientation: 90.110 degrees

Field radius: 0.357 degrees

Resolution: 1984x1565

Locations: Promiod, Aosta, Val d'Aosta, Italy

Data source: Own remote observatory

Remote source: Non-commercial independent facility


This spiral galaxy in Andromeda has apparent dimension of 13.5’ x 2.5’ and it is characteristic for dust lane.
It has a distance of 32 million light years and a diameter of 126000 light years, so it is larger than Milky Way and in addition has a higher activity in terms of star formation rate and radio luminosity. This could be due to tidal perturbations with another galaxy, which led also to a warp of the disc plane of the galaxy.
Indeed, following the dust lane in the image, you can see that on one side the dust lane is bent downward while on the other side is bent upward.



Roberto Marinoni
License: None (All rights reserved)

Sky plot

Sky plot


NGC 891, 


            Roberto Marinoni

In these public groups

Imagers of Italy