Hemisphere:  Northern  ·  Constellation: Ursa Major (UMa)  ·  Contains:  M 101  ·  NGC 5457  ·  NGC 5473  ·  NGC 5474  ·  NGC 5477
M101 & NGC 5474 - crop, 



    
        

            Florian Drews
M101 & NGC 5474 - crop
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M101 & NGC 5474 - crop

M101 & NGC 5474 - crop, 



    
        

            Florian Drews
M101 & NGC 5474 - crop
Powered byPixInsight

M101 & NGC 5474 - crop

Acquisition details

Dates:
March 23, 2014
Frames:
Astronomik CLS Canon EOS Clip: 49×300(4h 5′) ISO800
Integration:
4h 5′
Darks:
20
Flats:
40
Bias:
100
Avg. Moon age:
21.55 days
Avg. Moon phase:
56.38%
Temperature:
10.00

Basic astrometry details

Astrometry.net job: 213768

RA center: 14h03m50s.9

DEC center: +54°1951

Pixel scale: 1.819 arcsec/pixel

Orientation: 110.181 degrees

Field radius: 0.878 degrees

Resolution: 2908x1902

File size: 3.3 MB

Locations: Cardiff backyard, Cardiff, Wales, United Kingdom

Description

The pinwheel galaxy with a 130pds and an unmodded Canon 450D.

Wikipedia on NGC 5474:

NGC 5474 is a peculiar dwarf galaxy in the constellation Ursa Major. It is one of several companion galaxies of the Pinwheel Galaxy (M101), a grand-design spiral galaxy.[3][4] Among the Pinwheel Galaxy's companions, this galaxy is the closest to the Pinwheel Galaxy itself.[3] The gravitational interaction between NGC 5474 and the Pinwheel Galaxy have strongly distorted the galaxy. As a result, the disk is offset relative to the nucleus.[3][5] The star formation in this galaxy (as traced by hydrogen spectral line emission) is also offset from the nucleus.[5] NGC 5474 shows some signs of a spiral structure. As a result, this galaxy is often classified as a dwarf spiral galaxy, a relative rare group of dwarf galaxies.

Comments

Revisions

  • Final
    M101 & NGC 5474 - crop, 



    
        

            Florian Drews
    Original
  • M101 & NGC 5474 - crop, 



    
        

            Florian Drews
    B

Sky plot

Sky plot

Histogram

M101 & NGC 5474 - crop, 



    
        

            Florian Drews