Hemisphere:  Northern  ·  Constellation: Monoceros (Mon)  ·  Contains:  15 S Mon  ·  B39  ·  Christmas Tree Cluster  ·  Hubble's Nebula  ·  Hubble's variable neb  ·  NGC 2261  ·  NGC 2264  ·  Sh2-273  ·  The star 15Mon

Image of the day 12/24/2020

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    Hubble Variable, Cone and Fox Fur Nebulae (Wide Field!), 



    
        

            Charles Bonafilia
    Powered byPixInsight

    Hubble Variable, Cone and Fox Fur Nebulae (Wide Field!)

    Image of the day 12/24/2020

    Getting plate-solving status, please wait...
      Hubble Variable, Cone and Fox Fur Nebulae (Wide Field!), 



    
        

            Charles Bonafilia
      Powered byPixInsight

      Hubble Variable, Cone and Fox Fur Nebulae (Wide Field!)

      Imaging telescopes or lenses: SkyWatcher Esprit 120 APO

      Imaging cameras: ZWO ASI6200MM Pro

      Mounts: Skywatcher EQ6R Pro

      Guiding telescopes or lenses: SkyWatcher Esprit 120 APO

      Guiding cameras: ZWO ASI174MM ASI174mm

      Filters: Chroma SII 3nm  ·  Chroma Ha 3nm  ·  Chroma OIII 3nm

      Accessory: ZWO EFW 7x2"  ·  ASIair Pro


      Dates:Dec. 3, 2020Dec. 4, 2020Dec. 5, 2020Dec. 7, 2020Dec. 8, 2020Dec. 9, 2020Dec. 10, 2020

      Frames:
      Chroma Ha 3nm: 126x600" (21h) (gain: 100.00) -20C bin 1x1
      Chroma OIII 3nm: 84x600" (14h) (gain: 100.00) -20C bin 1x1
      Chroma SII 3nm: 84x600" (14h) (gain: 100.00) -20C bin 1x1

      Integration: 49h

      Avg. Moon age: 21.23 days

      Avg. Moon phase: 58.33%

      Bortle Dark-Sky Scale: 5.86


      Astrometry.net job: 4087950

      RA center: 6h 41' 5"

      DEC center: +9° 47' 41"

      Pixel scale: 1.805 arcsec/pixel

      Orientation: -1.171 degrees

      Field radius: 1.321 degrees


      Resolution: 3120x4247

      Data source: Backyard

      Description

      Located in the constellation Monoceros, the Unicorn, 2,700 light-years away, you'll discover several areas of interest. This 2.5 deg widefield view highlights a few; the Hubble Variable - NGC 2261(lower right), discovered by Edwin Hubble who reported this nebula appeared to change its shape in a series of photographs taken over 8 years.  It is now known that these changes are actually caused by variations in the variable star R Mon, which illuminates the nebula. NGC 2264, containing the Cone Nebula (lower center) which contains hot B-class star about 3500 times more luminous than our Sun, is located just beyond the tip of the Cone nebula and the Bok Globule in the tip of the cone may be creating a stellar winds that energizes and shapes the nebula. The Christmas Tree Cluster (center) with its brightest star (S Mon-center) ionizes the fine gases surrounding the cluster; causing the stellar winds which are visible throughout this image. The gentle arcs just south of S Mon highlighted in orange and blue near the center of the image are Herbig Haro objects, jets of gas from protostars embedded in the nebula, and the just to the right of S Mon is the Fox Fur Nebula, ionized primarily by S Mon and named so by its appearance of a fox stoll.

      This image was created by combining emission-line images in Hydrogen-alpha (red-orange), Oxygen [O III] (light blue) and Sulfur [S II] (blue-violet) in my backyard (San Diego, Ca) over several nights.

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      Hubble Variable, Cone and Fox Fur Nebulae (Wide Field!), 



    
        

            Charles Bonafilia