Contains:NGC 4657, NGC 4656, NGC 4631, NGC 4627
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Whale and Hockey Stick from SRO, 




    

        Rick Stevenson
Whale and Hockey Stick from SRO

Whale and Hockey Stick from SRO

Technical card

Resolution: 4553x3641

Frames:
Astrodon 5nm Ha: 55x1800"
Astrodon B Gen.2 E-series: 36x1200"
Astrodon G Gen.2 E-series: 28x1200"
Astrodon L Gen.2 E-series: 85x600"
Astrodon R Gen.2 E-series: 34x1200"

Integration: 74.3 hours

Astrometry.net job: 1990493

RA center: 190.753 degrees

DEC center: 32.362 degrees

Pixel scale: 0.840 arcsec/pixel

Orientation: 181.800 degrees

Field radius: 0.680 degrees

Data source: Unknown

Description

NGC 4631, the Whale Galaxy, is the edge-on barred spiral galaxy at bottom left. It is approximately 30 million light-years from Earth in the constellation Canes Venatici. Beneath NGC 4631 is its close companion the dwarf elliptical galaxy NGC 4627, also known as the Pup. NGC 4631 has a core of older, yellow stars surrounded by young blue stars. It has a dark equatorial dust lane and many emission nebulae glowing with the magenta of ionished Hydrogen. The central region of the galaxy is a starburst region where new stars are rapidly forming.

At top right is the highly distorted pair of interacting galaxies NGC 4656 and NGC 4657, also known as the Hockey Stick Galaxies.

These galaxies are all members of the NGC 4631 group.

Captured at SRO.

Acquisition credit: Scott Johnson, Augusto Hernandez, John Kasianowicz, Daniele Malleo, Jose Mtanous and Rick Stevenson

Processing credit & copyright: Rick Stevenson

Comments

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Rick Stevenson
License: None (All rights reserved)
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Revisions

  • Whale and Hockey Stick from SRO, 




    

        Rick Stevenson
    Original
  • Final
    Whale and Hockey Stick from SRO, 




    

        Rick Stevenson
    B
  • Whale and Hockey Stick from SRO, 




    

        Rick Stevenson
    C

B

Smaller crop

C

Inverted image with star streams

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Whale and Hockey Stick from SRO, 




    

        Rick Stevenson