Hemisphere:  Southern  ·  Constellation: Virgo (Vir)  ·  Contains:  NGC 4731  ·  NGC4731
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Imaging telescopes or lenses: Plane Wave Instruments CDK 12.5"

Imaging cameras: Finger Lakes Instruments Proline 16803

Mounts: AP900GTO

Guiding telescopes or lenses: Plane Wave Instruments CDK 12.5"

Guiding cameras: Starlight Xpress Lodestar guide camera

Software: PixInsight  ·  MaximDL

Filters: Astronomik L R G B Series II

Dates:May 4, 2019

Frames: 42x600"

Integration: 7.0 hours

Avg. Moon age: 29.08 days

Avg. Moon phase: 0.23%

Astrometry.net job: 2898437

RA center: 12h 51' 5"

DEC center: -6° 28' 33"

Pixel scale: 0.730 arcsec/pixel

Orientation: -90.910 degrees

Field radius: 0.248 degrees

Resolution: 1731x1737

Locations: Wiruna Dark Sky Site, Ilford, NSW, Australia

Data source: Traveller


This barred spiral galaxy NGC 4731 is about 65 million light-years away in the Virgo Cluster. Its spiral arms have undergone distortion by gravitational interaction with NGC 4697, which is out of sight below the bottom of this frame. The small galaxy to the right of NGC 4731 is the irregular galaxy 4731A


Sky plot

Sky plot