Hemisphere:  Northern  ·  Constellation: Canes Venatici (CVn)  ·  Contains:  NGC 4627  ·  NGC 4631  ·  NGC 4656  ·  NGC 4657
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Whale and Hockey Stick from SRO, 



    
        

            Rick Stevenson
Whale and Hockey Stick from SRO
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Whale and Hockey Stick from SRO

Getting plate-solving status, please wait...
Whale and Hockey Stick from SRO, 



    
        

            Rick Stevenson
Whale and Hockey Stick from SRO
Powered byPixInsight

Whale and Hockey Stick from SRO

Acquisition details

Frames:
Astrodon 5nm Ha: 55×1800(27h 30′)
Astrodon B Gen.2 E-series: 36×1200(12h)
Astrodon G Gen.2 E-series: 28×1200(9h 20′)
Astrodon L Gen.2 E-series: 85×600(14h 10′)
Astrodon R Gen.2 E-series: 34×1200(11h 20′)
Integration:
74h 20′

Basic astrometry details

Astrometry.net job: 1990493

RA center: 12h43m00s.7

DEC center: +32°2143

Pixel scale: 0.840 arcsec/pixel

Orientation: 181.800 degrees

Field radius: 0.680 degrees

Resolution: 4553x3641

File size: 6.5 MB

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

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

Description: Smaller crop

Uploaded: ...

C

Description: Inverted image with star streams

Uploaded: ...

Sky plot

Sky plot

Histogram

Whale and Hockey Stick from SRO, 



    
        

            Rick Stevenson