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

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

    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

      Imaging Telescopes Or Lenses
      Planewave CDK14
      Imaging Cameras
      QHYCCD QHY600M
      Mounts
      Planewave L-350
      Filters
      Astrodon Blue · Green · Red · Luminance
      Software
      Adobe Inc Photoshop CC · CCDWARE CCD Autopilot 5 · PixInsight
      Guiding Telescopes Or Lenses
      Planewave CDK14
      Guiding Cameras
      Starlight Express UltraStar Mono

      Acquisition details

      Dates:
      May 1, 2021
      Frames:
      Astrodon Blue: 33x300" (2h 45') (gain: 56.00) -10C bin 2x2
      Green: 14x300" (1h 10') (gain: 56.00) -10C bin 2x2
      Green: 6x600" (1h) (gain: 56.00) -10C bin 2x2
      Luminance: 58x300" (4h 50') (gain: 56.00) -10C bin 2x2
      Red: 30x300" (2h 30') (gain: 56.00) -10C bin 2x2
      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

      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