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Contains:  NGC 772, NGC 770
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NGC 772 or Arp 78

Technical card

Resolution: 2098x2037

Dates:Sept. 30, 2019

Frames:
Astrodon E-Series Blue filter: 30x300" bin 1x1
Astrodon E-Series Green filter: 30x300" bin 1x1
Astrodon E-Series Red filter: 30x300" bin 1x1
Astrodon Luminance E-Series: 42x600" bin 1x1

Integration: 14.5 hours

Avg. Moon age: 2.00 days

Avg. Moon phase: 4.46%

Astrometry.net job: 3100084

RA center: 1h 59' 2"

DEC center: +18° 57' 7"

Pixel scale: 0.744 arcsec/pixel

Orientation: 89.868 degrees

Field radius: 0.302

Locations: Entre Encinas y Estrellas E-EyE, Fregenal de la Sierra, Extremadura, Spain

Data source: Own remote observatory

Remote source: e-EyE Extremadura

Description

From Wikipedia: "Around 200,000 light years in diameter, NGC 772 is twice the size of the Milky Way Galaxy,[2] and is surrounded by several satellite galaxies – including the dwarf elliptical, NGC 770 – whose tidal forces on the larger galaxy have likely caused the emergence of a single elongated outer spiral arm that is much more developed than the others arms. Halton Arp includes NGC 772 in his Atlas of Peculiar Galaxies as Arp 78, where it is described as a "Spiral galaxy with a small high-surface brightness companion".

Two supernovae (SN 2003 hl & SN 2003 iq) have been observed in NGC 772.

NGC 772 probably has a H II nucleus, but it may be a transitional object".

Data acquisition: Barry Wilson & Steve Milne
Processing: Barry Wilson

Comments

Author

Barry-Wilson
Barry Wilson
License: None (All rights reserved)
5547
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NGC 772 or Arp 78, 





    
        

            Barry Wilson

In these public groups

Entre Encinas y Estrellas (e-EyE)