Celestial hemisphere:  Northern  ·  Constellation: Cetus (Cet)  ·  Contains:  M 77  ·  NGC 1055  ·  NGC 1068  ·  NGC 1072

Image of the day 12/11/2018

    NGC 1055 / NGC 1068 / Supernova SN 2018ivc, 



    
        

            Terry Robison
    NGC 1055 / NGC 1068 / Supernova SN 2018ivc
    Powered byPixInsight

    NGC 1055 / NGC 1068 / Supernova SN 2018ivc

    Image of the day 12/11/2018

      NGC 1055 / NGC 1068 / Supernova SN 2018ivc, 



    
        

            Terry Robison
      NGC 1055 / NGC 1068 / Supernova SN 2018ivc
      Powered byPixInsight

      NGC 1055 / NGC 1068 / Supernova SN 2018ivc

      Acquisition details

      Dates:
      Dec. 5, 2018
      Frames:
      98×900(24h 30′)
      Integration:
      24h 30′
      Avg. Moon age:
      27.78 days
      Avg. Moon phase:
      3.44%

      Basic astrometry details

      Astrometry.net job: 2403370

      RA center: 02h42m18s.10

      DEC center: +00°1337

      Pixel scale: 0.803 arcsec/pixel

      Orientation: 145.492 degrees

      Field radius: 0.466 degrees

      Resolution: 3478x2318

      File size: 2.5 MB

      Data source: Own remote observatory

      Remote source: Non-commercial independent facility

      Description

      This image contains three interesting targets. The first two are the larger galaxies in the foreground, NGC 1055 (lower left), and NGC 1068 or Messier 77 (upper right). The third is a little harder to spot. Zoom in on the galaxy in the upper right. If you are familiar with M77, there is what appears to be a little star where no star was before. It’s near the core, at the six o’clock position. That new star like object is Supernova SN 2018ivc. If you are having difficulty spotting it, I constructed an animated gif that highlights the event. Click on the image to zoom in. https://www.astrobin.com/379580/?nc=user and you will see it blinking in the animation.

      The top right galaxy has two names, Messier 77 or NGC 1068. It’s a barred spiral galaxy in the constellation Cetus, about 47 million light years away. Messier 77 has an estimated diameter of 170,000 light years and is one of the biggest galaxies of the Messier Catalogue. The apparent size when viewed from our vantage point is 7.1 X 6.0 arc min with an apparent magnitude of 9.6

      The galaxy in the lower left is NGC 1055. This is an edge-on spiral galaxy located in the same constellation, Cetus. It has a prominent bulge crossed by a wide knotty dark dust lane. If you look carefully, several bright Ha areas can be easily seen. NGC 155 is 52 million light years away, and has a diameter of about 115,800 light years across. The apparent size is 7.6 X 2.7 arc min with an apparent magnitude of 11.4. It’s a fairly dramatic look galaxy, and the glow around it is just amazing. I really like the look of this galaxy.

      Messier 77 and NGC 1044 are a binary system. Because of this, I really wanted to include both objects in the same frame. Normally, I would image each separately.

      The third object is the Supernova SN 2018ivc. The event happened midway during the imaging of this photo. At first, I thought it was my eyes or a guiding error. As I got more data, yep, something had changed. Once I realised this, I then heard about it. It only took 47 million years to get to us. What’s a few days to realize what you are looking at? If you’re interested in further information about the Supernova, there is a web page. http://www.rochesterastronomy.org/sn2018/sn2018ivc.html

      Exposure Details:

      Lum 35X900

      Red 26X450

      Green 16X450

      Blue 16X450

      Ha 17X1800

      Total time 24.5 hours



      Instruments Used:

      10 Inch RCOS fl 9.1

      Astro Physics AP-900 Mount

      SBIG STL 11000m

      FLI Filter Wheel

      Astrodon Lum, Red, Green, Blue Filters

      Baader Planetarium H-alpha 7nm Narrowband-Filter



      Software Used

      CCDStack (calibration, alignment, data rejection, stacking)

      Photoshop CS 6 (Image processing)

      Thanks for looking

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      NGC 1055 / NGC 1068 / Supernova SN 2018ivc, 



    
        

            Terry Robison