Hemisphere:  Northern  ·  Constellation: Ursa Major (UMa)  ·  Contains:  IC 2574
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Coddington’s Nebula (IC 2574) Irregular Dwarf Galaxy in Ursa Major (95 hrs integration), 



    
        

            Mike Oates
Coddington’s Nebula (IC 2574) Irregular Dwarf Galaxy in Ursa Major (95 hrs integration)
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Coddington’s Nebula (IC 2574) Irregular Dwarf Galaxy in Ursa Major (95 hrs integration)

Getting plate-solving status, please wait...
Coddington’s Nebula (IC 2574) Irregular Dwarf Galaxy in Ursa Major (95 hrs integration), 



    
        

            Mike Oates
Coddington’s Nebula (IC 2574) Irregular Dwarf Galaxy in Ursa Major (95 hrs integration)
Powered byPixInsight

Coddington’s Nebula (IC 2574) Irregular Dwarf Galaxy in Ursa Major (95 hrs integration)

Technical card

Imaging telescopes or lenses: Takahashi FSQ-106 ED

Imaging cameras: Starlight Xpress SX-814 Trius Monochrome CCD

Mounts: Sky-Watcher EZ-EQ6 GT

Guiding cameras: Starlight-XPress Lodestar Autoguider

Software: Photoshop CS6  ·  PIXINSIGHT 1.8

Filters: Astrodon 3nm OIII  ·  Ha 3nm  ·  Red  ·  Green  ·  Blue  ·  Astrodon L-NIR

Accessory: Lakeside Astro Motor Focus System  ·  Starlight Xpress SX 'Maxi wheel'  ·  Starlight Instruments FTF3545B-A Focuser


Dates:July 10, 2016

Frames: 416x822" (94h 59' 12")

Integration: 94h 59' 12"

Avg. Moon age: 6.00 days

Avg. Moon phase: 35.54%


Basic astrometry details

Astrometry.net job: 1267517

RA center: 10h 28' 16"

DEC center: +68° 25' 1"

Pixel scale: 0.959 arcsec/pixel

Orientation: -179.446 degrees

Field radius: 0.259 degrees


Resolution: 1350x1400

Locations: The Hills Observatory, Manchester, United Kingdom

Data source: Backyard

Description

Taken over a two year period on 34 nights. 6 filters used: R, G, B, NIR, Ha, & OIII
416 sub exposures from 6min to 1 hour long and a total integration time of 95 hours. There are too many different exposures and filters used to list in detail which is why I have just averaged the exposure time out amongst the number of sub exposures taken.

Not only is this faint dwarf galaxy recorded well with lots of nebulosity, but the whole image area is full of hundreds of fainter galaxies. Please take a look at the full size image and see how many you can find. (see image A for this)

This was taken as all my images are from Manchester UK, with lots of light pollution, so this was a real challenge. If I had dark skies, such a long integration time would not be needed.

I have added a cropped version for those who just want to view the galaxy.

Comments

Revisions

  • Coddington’s Nebula (IC 2574) Irregular Dwarf Galaxy in Ursa Major (95 hrs integration), 



    
        

            Mike Oates
    Original
  • Final
    Coddington’s Nebula (IC 2574) Irregular Dwarf Galaxy in Ursa Major (95 hrs integration), 



    
        

            Mike Oates
    B

Sky plot

Sky plot

Histogram

Coddington’s Nebula (IC 2574) Irregular Dwarf Galaxy in Ursa Major (95 hrs integration), 



    
        

            Mike Oates