Hemisphere:  Northern  ·  Constellation: Cygnus (Cyg)  ·  Contains:  B168  ·  Cocoon Nebula  ·  IC 5146  ·  LBN 424  ·  LDN 1055  ·  Sh2-125  ·  VdB147

Image of the day 11/16/2021

Getting plate-solving status, please wait...
    IC 5146 - Cocoon Nebula - Stellar Daycare, 



    
        

            Michael & Jon Norman
    Powered byPixInsight

    IC 5146 - Cocoon Nebula - Stellar Daycare

    Image of the day 11/16/2021

    Getting plate-solving status, please wait...
      IC 5146 - Cocoon Nebula - Stellar Daycare, 



    
        

            Michael & Jon Norman
      Powered byPixInsight

      IC 5146 - Cocoon Nebula - Stellar Daycare

      Imaging telescopes or lenses: Planewave CDK 17

      Imaging cameras: QHYCCD 600M

      Mounts: PlaneWave Instruments L 500

      Guiding cameras: QHYCCD 174M

      Filters: Antlia B  ·  Antlia G  ·  Antlia R  ·  Antlia L

      Accessory: Pegasus Astro Pocket Powerbox Pro  ·  QHYCCD CFW3-XL 9 Position  ·  Optec Sagitta OAG  ·  MoonLite NiteCrawler WR35


      Dates:Oct. 5, 2021

      Frames:
      Antlia B: 31x300" (2h 35') (gain: 0.00) -10C bin 2x2
      Antlia G: 37x300" (3h 5') (gain: 0.00) -10C bin 2x2
      Antlia L: 75x300" (6h 15') (gain: 0.00) -10C bin 2x2
      Antlia R: 26x300" (2h 10') (gain: 0.00) -10C bin 2x2

      Integration: 14h 5'

      Darks: 20

      Flats: 20

      Flat darks: 20

      Avg. Moon age: 28.46 days

      Avg. Moon phase: 1.30%


      RA center: 21h53m13s.359

      DEC center: +47°1516.16

      Pixel scale: 0.526 arcsec/pixel

      Orientation: -109.949 degrees

      Field radius: 0.297 degrees

      WCS transformation: thin plate spline

      More info:Open 


      Resolution: 2846x2900

      Data source: Own remote observatory

      Remote source: DeepSkyWest

      Description

      IC 5146, the cocoon nebula, is a spectacular emission/reflection nebulae surrounded by a (frustratingly) faint interstellar dust.  Faint as it may be, this dust plays a critical role within the cocoon nebula - acting as the source material for all the young stars that it spawns into existence.  Conversely, these young stars are the reason for the stunning pink emission region within the core.

       I found the contrast between emission and reflection regions within this nebula to be particularly interesting.  Looking into the emission region, one notices the hues shift between deep magenta and bubblegum pink.  This effect comes as the reflection and emission light sources within the nebula essentially overlap and the signals are mixed.  As you migrate further away from the core, the intensity of the emission drops down and the reflection dominates - resulting in a fairly unique lavender colour.  Finally, leaving the core, the remainder of the frame consists of faint dust punctuated with pockets of soft blue reflections.  There is technically a faint hydrogen alpha molecular cloud surrounding the whole frame but 12 hours of exposure barely registered above the read noise in the background.  To be explored further on a faster system….

      Michael and Jonathan Norman

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      IC 5146 - Cocoon Nebula - Stellar Daycare, 



    
        

            Michael & Jon Norman

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