Hemisphere:  Northern  ·  Constellation: Ursa Major (UMa)  ·  Contains:  NGC 5205  ·  NGC 5216  ·  NGC 5218  ·  NGC5205  ·  NGC5216  ·  NGC5218

Image of the day 02/05/2020

Getting plate-solving status, please wait...
    NGC 5216/5218 (Arp 104) and NGC 5205, 



    
        

            KuriousGeorge
    Powered byPixInsight

    NGC 5216/5218 (Arp 104) and NGC 5205

    Image of the day 02/05/2020

    Getting plate-solving status, please wait...
      NGC 5216/5218 (Arp 104) and NGC 5205, 



    
        

            KuriousGeorge
      Powered byPixInsight

      NGC 5216/5218 (Arp 104) and NGC 5205

      Imaging telescopes or lenses: Planewave CDK24

      Imaging cameras: FLI Proline 16803

      Mounts: Planewave L600

      Guiding cameras: Starlight Xpress Ultrastar

      Focal reducers: None

      Software: Planewave PWI3  ·  Planewave PWI4  ·  PixInsight 1.8  ·  Sequence Generator Pro  ·  Photoshop CS3  ·  PHD Guiding 2  ·  CCDWare CCD Inspector  ·  Maxim DL6

      Filters: Astrodon 50mm B  ·  Astrodon 50mm R  ·  Astrodon 50mm L  ·  Astrodon 50 mm G

      Accessory: FLI CFW-5-7  ·  Astrodon Monster MOAG  ·  Hedrick Focuser  ·  Planewave Delta-T  ·  Planewave EFA


      Dates:Jan. 26, 2020Jan. 27, 2020Jan. 28, 2020

      Frames:
      Astrodon 50 mm G: 12x900" (3h) -30C bin 1x1
      Astrodon 50mm B: 12x900" (3h) -30C bin 1x1
      Astrodon 50mm L: 21x900" (5h 15') -30C bin 1x1
      Astrodon 50mm R: 14x900" (3h 30') -30C bin 1x1

      Integration: 14h 45'

      Darks: ~20

      Flats: ~80

      Flat darks: ~80

      Bias: ~20

      Avg. Moon age: 2.40 days

      Avg. Moon phase: 6.94%

      Mean SQM: 21.40

      Mean FWHM: 1.80


      Astrometry.net job: 3366338

      RA center: 13h 31' 22"

      DEC center: +62° 38' 52"

      Pixel scale: 0.468 arcsec/pixel

      Orientation: -88.088 degrees

      Field radius: 0.318 degrees


      Resolution: 3669x3225

      Locations: KG Observatory, Julian, CA, United States

      Data source: Backyard

      Description

      Continuing my quest for difficult and rarely imaged distant objects, I came across this image of NGC 5216/5218 by Adam Block...

      Adam Block NGC 5216/5218

      This is LRBG = 10:4:4:4 hours in his 32-inch Schulman RCOS.

      Unfortunately the wind and sky this month didn't permit 20+ hours in the Planewave 24". But fortunately I had one long night with exceptional seeing, down to 1.5" FWHM measured on 15-minute subs. (-:

      I'm pleased with the overall results and the additional galaxy (NGC5205 @ 103.5 MLY!) that happpened to be in frame.

      From Adam's APOD...

      "Galaxies NGC 5216 (right) and NGC 5218 really do look like they are connected by a string. Of course, that string is a cosmic trail of gas, dust, and stars about 22,000 light-years long. Also known as Keenan's system (for its discoverer) and Arp 104, the interacting galaxy pair is some 17 million light-years away in the constellation Ursa Major. The debris trail that joins them, along with NGC 5218's comma-shaped extension and the distorted arms of NGC 5216, are a consequence of mutual gravitational tides. The tides disrupt the galaxies as they repeatedly swing close to one another. Drawn out over billions of years, the encounters will likely result in their merger into a single galaxy of stars. Such spectacular galactic mergers are now understood to be a normal part of the evolution of galaxies, including our own Milky Way."

      Comments

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      NGC 5216/5218 (Arp 104) and NGC 5205, 



    
        

            KuriousGeorge

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