Contains: NGC 4657, NGC 4656, NGC 4631, NGC 4627
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Whale and Crowbar Galaxies

Technical card

Resolution: 1600x1288

Dates: May 5, 2016

Frames: 41x300"

Integration: 3.4 hours

Avg. Moon age: 28.00 days

Avg. Moon phase: 2.61% job: 1082165

RA center: 190.730 degrees

DEC center: 32.341 degrees

Pixel scale: 1.919 arcsec/pixel

Orientation: 72.369 degrees

Field radius: 0.547 degrees

Locations: Sternenwelt Vogelsberg, Stumpertenrod, Hessen, Germany


The Whale and Crowbar Galaxies, NGC4632 and NGC4656, in an LRGB composite. A pair of interesting galaxies in Canes Venatici, which might have had a close encounter in the past. The Whale Galaxy is an edge-on spiral galaxy with a slightly distorted silhouette, its about the same size as our Milky Way. The Crowbar or Hockey Stick Galaxy also shows an obvious distortion, which might be due to the interaction of the two galaxies in the past.

After a very long break this is the first data taken with my equipment at the Sternenwelt Vogelsberg. Composed of 41 x 300sec of luminance and 12 x 120 sec (2x2 binning) for each RGB channel. Conditions where good, but transparency could have been better.





Sky plot

Sky plot


Whale and Crowbar Galaxies,