Celestial hemisphere:  Northern  ·  Constellation: Coma Berenices (Com)  ·  Contains:  IC 783  ·  M 100  ·  NGC 4312  ·  NGC 4321  ·  NGC 4322  ·  NGC 4323  ·  NGC 4328

Image of the day 05/08/2021

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    M100 | A Grand Design Spiral with Inner Star Forming Ring, 



    
        

            Kevin Morefield
    Powered byPixInsight

    M100 | A Grand Design Spiral with Inner Star Forming Ring

    Image of the day 05/08/2021

    Getting plate-solving status, please wait...
      M100 | A Grand Design Spiral with Inner Star Forming Ring, 



    
        

            Kevin Morefield
      Powered byPixInsight

      M100 | A Grand Design Spiral with Inner Star Forming Ring

      Acquisition details

      Dates:
      May 1, 2021
      Frames:
      Astrodon Gen2 E-Series Tru-Balance Blue 50x50 mm: 33×300(2h 45′) (gain: 56.00) -10°C bin 2×2
      Green: 14×300(1h 10′) (gain: 56.00) -10°C bin 2×2
      Green: 6×600(1h) (gain: 56.00) -10°C bin 2×2
      Luminance: 58×300(4h 50′) (gain: 56.00) -10°C bin 2×2
      Red: 30×300(2h 30′) (gain: 56.00) -10°C bin 2×2
      Integration:
      12h 15′
      Darks:
      20
      Flats:
      20
      Bias:
      125
      Avg. Moon age:
      19.73 days
      Avg. Moon phase:
      74.62%
      Bortle Dark-Sky Scale:
      3.00

      RA center: 12h22m25s.655

      DEC center: +15°4251.63

      Pixel scale: 0.608 arcsec/pixel

      Orientation: 100.130 degrees

      Field radius: 0.395 degrees

      More info:Open 

      Resolution: 3730x2809

      File size: 2.6 MB

      Data source: Own remote observatory

      Remote source: Sierra Remote Observatories

      Description

      M100 is a smallish Messier Galaxy, 7.5' at its widest. But it makes up for its size with a delicate spiral morphology. The most interesting detail is a very bright blue inner ring where stars are being birthed in large numbers. This ring required combining a separate, more limited stretch to prevent it saturating.

      This galaxy and its companions, NGC4328 and NGC 4323, are a part of the Virgo cluster. Zooming in, it would seem that half of the objects in the FOV are stars and half are galaxies.

      I like to imagine this galaxy and M31 switching places. What a beautiful sight that would make using binoculars.

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      M100 | A Grand Design Spiral with Inner Star Forming Ring, 



    
        

            Kevin Morefield